When?

15 August 1945: the date of Allied victory over Japan, World War II
1530s: the decade from 1530 to 1539
1750s: the decade from 1750 to 1759
1760s: the decade from 1760 to 1769
1770s: the decade from 1770 to 1779
1780s: the decade from 1780 to 1789
1790s: the decade from 1790 to 1799
1820s: the decade from 1820 to 1829
1830s: the decade from 1830 to 1839
1840s: the decade from 1840 to 1849
1850s: the decade from 1850 to 1859
1860s: the decade from 1860 to 1869
1870s: the decade from 1870 to 1879
1880s: the decade from 1880 to 1889
1890s: the decade from 1890 to 1899
1900s: the decade from 1900 to 1909
1920s: the decade from 1920 to 1929
1930s: the decade from 1930 to 1939
1940s: the decade from 1940 to 1949
1950s: the decade from 1950 to 1959
1960s: the decade from 1960 to 1969
1970s: the decade from 1970 to 1979
1980s: the decade from 1980 to 1989
1990s: the decade from 1990 to 1999
24/7: uptime is 24 hours a day 7 days a week
365 days: a year that is not a leap year
366 days: a calendar year with an extra day added in February
8 May 1945: the date of Allied victory in Europe, World War II
academic session: the time during which a school holds classes
academic year: the period of time each year when the school is open and people are studying
Adar: the sixth month of the civil year; the twelfth month of the ecclesiastic year in the Jewish calendar (in February and March)
Adar Sheni: included seven times in every 19 years
administration: the tenure of a president
Admission Day: in some states of the United States: a legal holiday commemorating the day the state was admitted to the Union
adolescence: the time period between the beginning of puberty and adulthood
adulthood: the period of time in your life after your physical growth has stopped and you are fully developed
Advent: the season including the four Sundays preceding Christmas
Advent Sunday: the first of the four Sundays during Advent
aeon: an immeasurably long period of time
afterlife: life after death
afternoon: the part of the day between noon and evening
age of consent: the minimum age for marrying without parental consent or the minimum age for consensual sexual relations; intercourse at an earlier age can result in a charge of assault or statutory rape; the age differs in different states of the Union
age: a time of life (usually defined in years) at which some particular qualification or power arises
age: a late time of life
age: an era of history having some distinctive feature
age: a prolonged period of time
air alert: the time period during which military and civilian agencies are prepared for an enemy air attack
All Saints' Day: a Christian feast day honoring all the saints; first observed in 835
All Souls' Day: a day of supplication for all the souls in purgatory
Allhallows Eve: the evening before All Saints' Day; often devoted to pranks played by young people
Allhallowtide: the season of All Saints' Day
American Indian Day: US: the 4th Friday in September
anal phase: (psychoanalysis) the second sexual and social stage of a child's development during which bowel control is learned
anaphase: the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
anniversary: the date on which an event occurred in some previous year (or the celebration of it)
annum: (Latin) year
Annunciation Day: a festival commemorating the announcement of the Incarnation by the angel Gabriel to the Virgin Mary; a quarter day in England, Wales, and Ireland
anomalistic year: time of the earth's revolution from perihelion to perihelion again; 365 days and 6 hr and 13 min and 53.1 sec
antiquity: the historic period preceding the Middle Ages in Europe
apogee: a final climactic stage
April: the month following March and preceding May
April Fools' day: the first day of April which is celebrated by playing practical jokes
Arbor Day: a day designated for planting trees
Armed Forces Day: the 3rd Saturday in May
Armistice Day: a legal holiday in the United States; formerly Armistice Day but called Veterans' Day since 1954
Asadha: the fourth month of the Hindu calendar
Ascension of the Lord: (Christianity) celebration of the Ascension of Christ into heaven; observed on the 40th day after Easter
Ash Wednesday: the 7th Wednesday before Easter; the first day of Lent; the day following Mardi Gras (`Fat Tuesday'); a day of fasting and repentance
Assumption of Mary: celebration in the Roman Catholic Church of the Virgin Mary's being taken up into heaven when her earthly life ended; corresponds to the Dormition in the Eastern Orthodox Church
astronomical year: the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
Asvina: the seventh month of the Hindu calendar
attention span: the length of time you can concentrate on some idea or activity
August: the month following July and preceding September
autumn: the season when the leaves fall from the trees
Av: the eleventh month of the civil year; the fifth month of the ecclesiastical year in the Jewish calendar (in July and August)
babyhood: the early stage of growth or development
bachelorhood: the time of a man's life prior to marriage
bank holiday: any of several weekdays when banks are closed; a legal holiday in Britain
Baroque period: the historic period from about 1600 until 1750 when the baroque style of art, architecture, and music flourished in Europe
baseball season: the season when baseball is played
basketball season: the season when basketball is played
Bastille Day: a legal holiday in France celebrating the storming of the Paris bastille in 1789
beauty sleep: sleep before midnight
Bhadrapada: the sixth month of the Hindu calendar
bicentenary: the 200th anniversary (or the celebration of it)
bimester: a period of 2 months
bimillenary: a span of 2000 years
bimillenary: the 2000th anniversary (or the celebration of it)
birthday: an anniversary of the day on which a person was born (or the celebration of it)
bit: an indefinitely short time
bloom: the best time of youth
bloom: the period of greatest prosperity or productivity
blue moon: a long time
bout: a period of illness
Boxing Day: first weekday after Christmas
boyhood: the childhood of a boy
bronze age: (classical mythology) the third age of the world, marked by war and violence
Bronze Age: (archeology) a period between the Stone and Iron Ages, characterized by the manufacture and use of bronze tools and weapons
Brumaire: second month of the Revolutionary calendar (October and November); the month of mist
Caitra: the first Hindu calendar month (corresponding to March in the Gregorian calendar)
calendar day: a day reckoned from midnight to midnight
calendar month: one of the twelve divisions of the calendar year
calendar week: a period of seven consecutive days starting on Sunday
calendar year: the year (reckoned from January 1 to December 31) according to Gregorian calendar
Caliphate: the era of Islam's ascendancy from the death of Mohammed until the 13th century; some Moslems still maintain that the Moslem world must always have a calif as head of the community
Candlemas Day: feast day commemorating the presentation of Christ in the temple; a quarter day in Scotland
canicular days: the hot period between early July and early September; a period of inactivity
centenary: the 100th anniversary (or the celebration of it)
century: a period of 100 years
chapter: any distinct period in history or in a person's life
childhood: the time of person's life when they are a child
Chislev: the third month of the civil year; the ninth month of the ecclesiastical year in the Jewish calendar (in November and December)
Christian era: the time period beginning with the supposed year of Christ's birth
Christian holy day: a religious holiday for Christians
Christian year: the year in the ecclesiastical calendar; especially feast days and special seasons
Christmas Day: a Christian holiday celebrating the birth of Christ; a quarter day in England, Wales, and Ireland
Christmas Eve: the day before Christmas
Christmastide: period extending from Dec. 24 to Jan. 6
church festival: a festival having religious significance
Cinco de Mayo: the fifth of May which is observed in Mexico and Mexican-American communities in the United States to commemorate the Mexican victory over the French in the Battle of Puebla in 1862
Citizenship Day: celebrated in the United States
clocking: the time taken to traverse a measured course
clotting time: the time it takes for a sample of blood to clot; used to diagnose some clotting disorders
cold snap: a spell of cold weather
commencement day: the day on which university degrees are conferred
Commonwealth Day: British, anniversary of Queen Victoria's birth
compassionate leave: (military) leave granted in an emergency such as family sickness or death
compensatory time: time off that is granted to a worker as compensation for working overtime
contemporary world: the circumstances and ideas of the present age
continuance: the period of time during which something continues
Corpus Christi: Thursday after Trinity Sunday; first celebrated in 1246
dark: the time after sunset and before sunrise while it is dark outside
date: the particular day, month, or year (usually according to the Gregorian calendar) that an event occurred
date of reference: (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
dawn: an opening time period
day: a day assigned to a particular purpose or observance
day: the recurring hours when you are not sleeping (especially those when you are working)
day: some point or period in time
day: the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis
day: an era of existence or influence
Day of Atonement: (Judaism) a solemn and major fast day on the Jewish calendar; 10th of Tishri; its observance is one of the requirements of the Mosaic law
Day of Judgement: (New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
day of rest: a day set aside for rest
day of the week: any one of the seven days in a week
day off: a day when you are not required to work
day shift: the work shift during the day (as 8 a.m. to 4 p.m.)
day: the time after sunrise and before sunset while it is light outside
days: the time during which someone's life continues
dead: a time when coldness (or some other quality associated with death) is intense
deathbed: the last few hours before death
decade: a period of 10 years
December: the last (12th) month of the year
Decoration Day: legal holiday in the United States, last Monday in May; commemorates the members of the United States armed forces who were killed in war
Dhu al-Hijjah: the twelfth month of the Islamic calendar and the season of the hajj; has one extra day in leap years
Dhu'l-Qa'dah: the eleventh month of the Islamic calendar
diakinesis: the final stage of the prophase of meiosis
diamond jubilee: an anniversary celebrating the passage of 60 years
diamond wedding: the 60th wedding anniversary
diplotene: the fourth stage of the prophase of meiosis
Discovery Day: a legal holiday commemorating the discovery of America by Christopher Columbus
dogwatch: either of two short watches: from 4-6 pm or 6-8 pm
Dominion Day: a legal holiday in Canada commemorating receiving Dominion status in 1867
dotage: mental infirmity as a consequence of old age; sometimes shown by foolish infatuations
downtime: a period of time when something (as a machine or factory) is not operating (especially as a result of malfunctions)
drinking age: the age at which is legal for a person to buy alcoholic beverages
drought: a prolonged shortage
dry season: one of the two seasons in tropical climates
duty period: the time period during which you are at work
duty tour: a period of time spent in military service
early days: an early period of development
Easter: a Christian celebration of the Resurrection of Christ; celebrated on the Sunday following the first full moon after the vernal equinox
Easter Sunday: the day (in March or April) on which the festival of Easter is celebrated
Eastertide: the Easter season
eighties: the time of life between 80 and 90
elapsed time: the time that elapses while some event is occurring
election day: the day appointed for an election; in the United States it is the 1st Tuesday after the 1st Monday in November
Elizabethan age: a period in British history during the reign of Elizabeth I in the 16th century; an age marked by literary achievement and domestic prosperity
Ellul: the twelfth month of the civil year; the sixth month of the ecclesiastical year in the Jewish calendar (in August and September)
Ember Day: a day set aside for fasting and prayer
Enlightenment: a movement in Europe from about 1650 until 1800 that advocated the use of reason and individualism instead of tradition and established doctrine
Eolithic Age: the earliest part of the Stone Age marked by the earliest signs of human culture
ephemera: something transitory; lasting a day
Epipaleolithic: middle part of the Stone Age beginning about 15,000 years ago
Epiphany of Our Lord: twelve days after Christmas; celebrates the visit of the three wise men to the infant Jesus
episcopate: the term of office of a bishop
epoch: a period marked by distinctive character or reckoned from a fixed point or event
eve: the period immediately before something
eve: the latter part of the day (the period of decreasing daylight from late afternoon until nightfall)
evening: the early part of night (from dinner until bedtime) spent in a special way
evening: a later concluding time period
evening shift: the work shift during the evening (as 4 p.m. to midnight)
exhibition season: the time before the regular games begin when football or baseball teams play practice games
extended time scale: (simulation) the time scale used in data processing when the time-scale factor is greater than one
extra innings: overtime play until one team is ahead at the end of an inning; e.g. baseball
extra time: playing time beyond regulation, to break a tie
face time: work time spent at the location of or in the presence of other people
fast day: a day designated for fasting
Fast of Esther: (Judaism) a minor fast day on Adar 13 commemorates three days that Esther fasted before approaching the Persian king on behalf of the Jewish people; the fast is connected with Purim
Fast of Gedaliah: (Judaism) a minor fast day on Tishri 3 that commemorates the killing of the Jewish governor of Judah
Fast of Tammuz: (Judaism) a minor fast day on Tammuz 17 when the walls of Jerusalem were breached
Fast of Tevet: (Judaism) a minor fast day on Tevet 10 commemorates the beginning of the siege of Jerusalem and has also been proclaimed a memorial day for the six million Jews who died in the Holocaust
Fast of the Firstborn: (Judaism) a minor fast day on Nissan 14 that is observed only by firstborn males; it is observed on the day before Passover
fast time scale: (simulation) the time scale used in data processing when the time-scale factor is less than one
Father's Day: US: third Sunday in June
feast day: a day designated for feasting
Feast of Dormition: celebration in the Eastern Orthodox Church of the Virgin Mary's being taken up into heaven when her earthly life ended; corresponds to the Assumption in the Roman Catholic Church and is also celebrated on August 15th
Feast of Sacrifice: the 10th day of Dhu'l-Hijja; all Muslims attend a service in the mosques and those who are not pilgrims perform a ritual slaughter of a sheep (commemorating God's ransom of Abraham's son from sacrifice) and give at least a third of the meat to charity
Feast of Tabernacles: a major Jewish festival beginning on the eve of the 15th of Tishri and commemorating the shelter of the Israelites during their 40 years in the wilderness
Feast of the Circumcision: (Roman Catholic Church and Anglican Church) feast day celebrating the circumcision of Jesus; celebrated on January 1st
Feast of the Dedication: (Judaism) an eight-day Jewish holiday commemorating the rededication of the Temple of Jerusalem in 165 BC
Feast of the Unleavened Bread: (Judaism) a Jewish festival (traditionally 8 days from Nissan 15) celebrating the exodus of the Israelites from Egypt
Feast of Weeks: (Judaism) Jewish holy day celebrated on the sixth of Sivan to celebrate Moses receiving the Ten Commandments
February: the month following January and preceding March
February 29: the name of the day that is added during a leap year
feria: a weekday on which no festival or holiday is celebrated
fertile period: the time in the menstrual cycle when fertilization is most likely to be possible (7 days before to 7 days after ovulation)
festival: a day or period of time set aside for feasting and celebration
field day: a day for outdoor athletic competition
field day: (military) a day for military exercises and display
field day: a time of unusual pleasure and success
field day: a day devoted to an outdoor social gathering
fifties: the time of life between 50 and 60
financial year: any accounting period of 12 months
First of May: observed in many countries to celebrate the coming of spring; observed in Russia and related countries in honor of labor
first quarter: the first fourth of the Moon's period of revolution around the Earth
first trimester: time period extending from the first day of the last menstrual period through 12 weeks of gestation
fishing season: the season during which it is legal to catch fish
Flag Day: commemorating the adoption of the United States flag in 1777
Floreal: eighth month of the Revolutionary calendar (April and May); the month of flowers
football season: the season when football is played
forenoon: the time period between dawn and noon
forties: the time of life between 40 and 50
fortnight: a period of fourteen consecutive days
free time: time available for hobbies and other activities that you enjoy
free time: time that is free from duties or responsibilities
Friday: the sixth day of the week; the fifth working day
Frimaire: third month of the Revolutionary calendar (November and December); the frosty month
Fructidor: twelfth month of the Revolutionary calendar (August and September); the month of fruit
full: the time when the Moon is fully illuminated
furlough: a temporary leave of absence from military duty
generation: the normal time between successive generations
generation: a stage of technological development or innovation
genital phase: (psychoanalysis) the fifth sexual and social stage in a person's development occurring during adolescence; interest focuses on sexual activity
Germinal: seventh month of the Revolutionary calendar (March and April); the month of buds
girlhood: the childhood of a girl
go: a time period for working (after which you will be relieved by someone else)
golden age: any period (sometimes imaginary) of great peace and prosperity and happiness
golden age: a time period when some activity or skill was at its peak
Golden Age: (classical mythology) the first and best age of the world, a time of ideal happiness, prosperity, and innocence; by extension, any flourishing and outstanding period
golden wedding anniversary: the 50th wedding anniversary
golden years: the time of life after retirement from active work
Good Friday: Friday before Easter
grace: a period of time past the deadline for fulfilling an obligation during which a penalty that would be imposed for being late is waived, especially an extended period granted as a special favor
graveyard shift: the work shift during the night (as midnight to 8 a.m.)
graveyard watch: a watch during the night (as from midnight to 8 a.m.)
Great Depression: a period during the 1930s when there was a worldwide economic depression and mass unemployment
Great Schism: the period from 1378 to 1417 during which there were two papacies in the Roman Catholic Church, one in Rome and one in Avignon
Gregorian calendar month: a month in the Gregorian calendar
Groundhog Day: if the ground hog emerges and sees his shadow on this day, there will be 6 more weeks of winter
growing season: the season during which a crop grows best
guest night: an evening when members of a club or college can bring their friends as guests
Guy Fawkes Day: day for the celebration of the discovery of the Gunpowder Plot
Guy Fawkes Night: effigies of Guy Fawkes are burned on this night
half life: the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
half-century: a period of 50 years
half-holiday: a day on which half is free from work or duty
half-moon: the time at which the Moon is at first or last quarter when half its face is illuminated
half-term: a short vacation about halfway through a school term
hard time: a term served in a maximum security prison
hard times: a time of difficulty
Harlem Renaissance: a period in the 1920s when African-American achievements in art and music and literature flourished
harvest moon: the full moon nearest the September equinox
harvest: the season for gathering crops
haying: the season for cutting and drying and storing grass as fodder
hebdomad: any period of seven consecutive days
Heshvan: the second month of the civil year; the eighth month of the ecclesiastical year in the Jewish calendar (in October and November)
High Holy Day: Jewish holy days observed with particular solemnity
high season: the season when travel is most active and rates are highest
Hindu calendar month: any lunisolar month in the Hindu calendar
hockey season: the season when hockey is played
Hogmanay: New Year's Eve in Scotland
holiday: a day on which work is suspended by law or custom
holiday season: a time when many people take holidays
holiday: leisure time away from work devoted to rest or pleasure
holy day of obligation: a day when Catholics must attend Mass and refrain from servile work, and Episcopalians must take Communion
holy day: a day specified for religious observance
Holy Innocents' Day: December 28, commemorating Herod's slaughter of the children of Bethlehem
Holy Saturday: the Saturday before Easter; the last day of Lent
Holy Year: (Roman Catholic Church) a period of remission from sin (usually granted every 25 years)
honeymoon: a holiday taken by a newly married couple
honeymoon: the early (usually calm and harmonious) period of a relationship; business or political
hospitalization: a period of time when you are confined to a hospital
hot spell: a spell of hot weather
hour: a special and memorable period
hours: a period of time assigned for work
hours: an indefinite period of time
hunting season: the season during which it is legal to kill a particular species
Id al-Fitr: a Muslim day of feasting at the end of Ramadan
ides: in the Roman calendar: the 15th of March or May or July or October or the 13th of any other month
Immaculate Conception: Roman Catholic holy day first celebrated in 1854
immortality: perpetual life after death
Inauguration Day: the day designated for inauguration of the United States President
incarnation: time passed in a particular bodily form
incubation: (pathology) the phase in the development of an infection between the time a pathogen enters the body and the time the first symptoms appear
incubation period: the period between infection and the appearance of symptoms of the disease
incumbency: the term during which some position is held
Independence Day: a legal holiday in the United States
indiction: a 15-year cycle used as a chronological unit in ancient Rome and adopted in some medieval kingdoms
Industrial Revolution: the transformation from an agricultural to an industrial nation
information age: a period beginning in the last quarter of the 20th century when information became easily accessible through publications and through the manipulation of information by computers and computer networks
iron age: (classical mythology) the last and worst age of the world
Iron Age: (archeology) the period following the Bronze Age; characterized by rapid spread of iron tools and weapons
Islamic calendar month: any lunar month in the Muslim calendar
Italian Renaissance: the early period when Italy was the center of the Renaissance
Iyyar: the eighth month of the civil year; the second month of the ecclesiastical year (in April and May)
January: the first month of the year; begins 10 days after the winter solstice
Jazz Age: the 1920s in the United States characterized in the novels of F. Scott Fitzgerald as a period of wealth, youthful exuberance, and carefree hedonism
Jefferson Davis' Birthday: celebrated in southern United States
Jewish calendar month: a month in the Jewish calendar
Jewish holy day: a religious holiday for Jews
Jewish New Year: (Judaism) a solemn Jewish feast day celebrated on the 1st or 1st and 2nd of Tishri; noted for the blowing of the shofar
jubilee: a special anniversary (or the celebration of it)
July: the month following June and preceding August
Jumada I: the fifth month of the Islamic calendar
Jumada II: the sixth month of the Islamic calendar
June: the month following May and preceding July
Jyaistha: the third month of the Hindu calendar
Karttika: the eighth month of the Hindu calendar
kingdom come: the next world
kip: sleep
Labor Day: first Monday in September in the United States and Canada
lactation: the period following birth during which milk is secreted
Lag b'Omer: (Judaism) Jewish holy day; the 33rd day after the 2nd day of Passover; the 18th day of Iyar
Lammas Day: commemorates Saint Peter's miraculous deliverance from prison; a quarter day in Scotland; a harvest festival in England
Lammastide: the season of Lammas
last quarter: the last fourth of the Moon's period of revolution around the Earth
latency period: (psychoanalysis) the fourth period (from about age 5 or 6 until puberty) during which sexual interests are supposed to be sublimated into other activities
lease: the period of time during which a contract conveying property to a person is in effect
leave: the period of time during which you are absent from work or duty
legal age: the age at which persons are considered competent to manage their own affairs
legal holiday: authorized by law and limiting work or official business
leisure: time available for ease and relaxation
Lententide: a period of 40 weekdays from Ash Wednesday to Holy Saturday
leptotene: the first stage of the prophase of meiosis
liberty: leave granted to a sailor or naval officer
life: the period between birth and the present time
life: the period from the present until death
life: a prison term lasting as long as the prisoner lives
life: the period during which something is functional (as between birth and death)
limitation: (law) a time period after which suits cannot be brought
Lincoln's Birthday: the day on which President Abraham Lincoln is remembered
long haul: a period of time sufficient for factors to work themselves out
longueur: a period of dullness or boredom (especially in a work of literature or performing art)
Lord's Day: first day of the week; observed as a day of rest and worship by most Christians
Low Sunday: the Sunday following Easter
Lower Paleolithic: the oldest part of the Paleolithic Age with the emergence of the hand ax; ended about 120,000 years ago
lunar day: the period of time taken for the moon to make one full rotation on its axis (about 27.3 sidereal days)
lunar time period: there are usually two high and two low tides each day
lunar year: a period of 12 lunar months
lustrum: a period of five years
luteal phase: the second half of the menstrual cycle after ovulation; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo; if fertilization does not occur then menstrual flow begins
Magha: the eleventh month of the Hindu calendar; corresponds to January in the Gregorian calendar
major fast day: one of two major fast days on the Jewish calendar
March: the month following February and preceding April
Margasivsa: the ninth month of the Hindu calendar
market day: a fixed day for holding a public market
Martin Luther King Jr's Birthday: observed on the Monday closest to January 15
Maundy Thursday: the Thursday before Easter; commemorates the Last Supper
May: the month following April and preceding June
menstrual phase: the phase of the menstrual cycle during which the lining of the uterus is shed (the first day of menstrual flow is considered day 1 of the menstrual cycle)
Mesasamkranti: Hindu solar holiday at the beginning of the new astrological year when the sun enters the constellation Aries
Messidor: tenth month of the Revolutionary calendar (June and July); the month of harvest
metaphase: the second stage of mitosis
metaphase: the second stage of meiosis
Michaelmas Day: honoring the archangel Michael; a quarter day in England, Wales, and Ireland
Michaelmastide: the season of Michaelmas
mid-April: the middle part of April
mid-August: the middle part of August
mid-December: the middle part of December
mid-February: the middle part of February
mid-January: the middle part of January
mid-July: the middle part of July
mid-June: the middle part of June
mid-March: the middle part of March
mid-May: the middle part of May
mid-nineties: the time of life between 90 and 100
mid-November: the middle part of November
mid-October: the middle part of October
mid-September: the middle part of September
mid-seventies: the time of life between 70 and 80
mid-sixties: the time of life between 60 and 70
mid-thirties: the time of life between 30 and 40
mid-twenties: the time of life between 20 and 30
midafternoon: the middle part of the afternoon
middle age: the time of life between youth and old age (e.g., between 40 and 60 years of age)
Middle Ages: the period of history between classical antiquity and the Italian Renaissance
Middle Paleolithic: the time period of Neanderthal man; ended about 35,000 years BC
Midsummer Night: the night before Midsummer Day
Midsummer's Day: a quarter day in England, Wales, and Ireland
midweek: the middle of a week
midwinter: the middle of winter
millenary: a span of 1000 years
millenary: the 1000th anniversary (or the celebration of it)
minor fast day: one of five minor fast days on the Jewish calendar
minority: any age prior to the legal age
modern era: the present or recent times
Monday: the second day of the week; the first working day
monsoon: rainy season in southern Asia when the southwestern monsoon blows, bringing heavy rains
month of Sundays: a time perceived as long
Mother's Day: second Sunday in May
movable feast: a religious holiday that falls on different dates in different years
Muharram: the first month of the Islamic calendar
multistage: occurring in more than one stage
musth: an annual phase of heightened sexual excitement in the males of certain large mammals (especially elephants); is associated with discharge from a gland between the eye and ear
name day: the feast day of a saint whose name one bears
nap: a period of time spent sleeping
Neolithic Age: latest part of the Stone Age beginning about 10,000 BC in the Middle East (but later elsewhere)
neonatal period: the first 28 days of life
New Deal: the historic period (1933-1940) in the United States during which President Franklin Roosevelt's economic policies were implemented
new moon: the time at which the Moon appears as a narrow waxing crescent
New Year: the calendar year just begun
New Year's Day: the first day of the year
New Year's Eve: the last day of the year
New York minute: a very short time (as the time it takes the eye to blink or the heart to beat)
night: the time between sunset and midnight
night: the period spent sleeping
night: a period of ignorance or backwardness or gloom
Ninth of Ab: (Judaism) a major fast day on the Jewish calendar commemorating the destruction of the temples in Jerusalem
Nissan: the seventh month of the civil year; the first month of the ecclesiastic year (in March and April)
Nivose: fourth month of the Revolutionary calendar (December and January); the snowy month
note value: (music) the relative duration of a musical note
November: the month following October and preceding December
November 5: anniversary of the discovery of the Gunpowder Plot
noviciate: the period during which you are a novice (especially in a religious order)
occupation: the period of time during which a place or position or nation is occupied
octave: a feast day and the seven days following it
October: the month following September and preceding November
off year: a year in which no major political elections are held
off year: a year in which productivity is low or inferior
off-day: a day when things go poorly
off-season: the season when travel is least active and rates are lowest
Olympiad: one of the four-year intervals between Olympic Games; used to reckon time in ancient Greece for twelve centuries beginning in 776 BC
oral phase: (psychoanalysis) the first sexual and social stage of an infant's development; the mouth is the focus of the libido and satisfaction comes from suckling and chewing and biting
overtime: work done in addition to regular working hours
overtime period: a period of overtime play to resolve a tie; e.g. basketball
OWLT: the elapsed time it takes for light (or radio signals) to travel between the Earth and a celestial object
pachytene: the third stage of the prophase of meiosis
paid vacation: a vacation from work by an employee with pay granted
Paleolithic Age: second part of the Stone Age beginning about 750,000 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC
Palm Sunday: Sunday before Easter
Pan American Day: a day celebrating political and economic unity among American countries
Pansa: the tenth month of the Hindu calendar
Pascha: the Christian festival of Easter
Pascha: the Jewish feast of the Passover
pass: (military) a written leave of absence
Passion Sunday: second Sunday before Easter
Passion Week: the week before Easter
past: a earlier period in someone's life (especially one that they have reason to keep secret)
patch: a period of indeterminate length (usually short) marked by some action or condition
Patriot's Day: the 3rd Monday in April; Massachusetts and Maine celebrate the battle of Lexington and Concord in 1775
payday: the day on which you receive pay for your work
peacetime: a period of time during which there is no war
Phalguna: the twelfth month of the Hindu calendar
phallic phase: (psychoanalysis) the third stage in a child's development when awareness of and manipulation of the genitals is supposed to be a primary source of pleasure
phase of cell division: a stage in meiosis or mitosis
phase of the moon: a time when the Moon presents a particular recurring appearance
phase: any distinct time period in a sequence of events
Platonic year: time required for one complete cycle of the precession of the equinoxes, about 25,800 years
playday: time for play or diversion
Pluviose: fifth month of the Revolutionary calendar (January and February); the rainy month
Prairial: ninth month of the Revolutionary calendar (May and June); the month of meadows
prehistoric culture: the time during the development of human culture before the appearance of the written word
prepuberty: a period of two years immediately prior to the onset of puberty when growth and changes leading to sexual maturity occur
preseason: a period prior to the beginning of the regular season which is devoted to training and preparation
Presidents' Day: the third Monday in February; commemorates both presidents Lincoln and Washington
press run: the period that presses run to produce an issue of a newspaper
prime: the time of maturity when power and vigor are greatest
prison term: the period of time a prisoner is imprisoned
probation: a trial period during which an offender has time to redeem himself or herself
probation: a trial period during which your character and abilities are tested to see whether you are suitable for work or for membership
prohibition: the period from 1920 to 1933 when the sale of alcoholic beverages was prohibited in the United States by a constitutional amendment
prophase: the first stage of mitosis
prophase: the first stage of meiosis
puberty: the time of life when sex glands become functional
puerperium: time period following childbirth when the mother's uterus shrinks and the other functional and anatomic changes of pregnancy are resolved
Purim: (Judaism) a Jewish holy day commemorating their deliverance from massacre by Haman
quadrennium: a period of four years
Quadrigesima Sunday: the first Sunday in Lent
quarter: a fourth part of a year; three months
quarter: one of four periods into which the school year is divided
quarter day: a Christian holy day; one of four specified days when certain payments are due
quarter-century: a period of 25 years
quatercentenary: the 400th anniversary (or the celebration of it)
quattrocento: the 15th century in Italian art and literature
question time: a period during a parliamentary session when members of British Parliament may ask questions of the ministers
quincentenary: the 500th anniversary (or the celebration of it)
Quinquagesima Sunday: the Sunday before Ash Wednesday (the beginning of Lent)
quinquennium: a period of five years
Rabi I: the third month of the Islamic calendar
Rabi II: the fourth month of the Islamic calendar
rag day: a day on which university students hold a rag
rag: a week at British universities during which side-shows and processions of floats are organized to raise money for charities
rainy day: a (future) time of financial need
rainy season: one of the two seasons in tropical climates
Rajab: the seventh month of the Islamic calendar
Ramadan: the ninth month of the Islamic calendar; the month of fasting; the holiest period for the Islamic faith
Ramanavami: Hindu lunar holiday (on the 9th day of Caitra) to celebrate the birth of Rama
real time: (computer science) the time it takes for a process under computer control to occur
real time: the actual time that it takes a process to occur
Reconstruction Period: the period after the American Civil War when the southern states were reorganized and reintegrated into the Union; 1865-1877
red-letter day: a memorably happy or noteworthy day (from the custom of marking holy days in red on church calendars)
regency: the period of time during which a regent governs
Regency: the period from 1811-1820 when the Prince of Wales was regent during George III's periods of insanity
regulation time: (sports) the normal prescribed duration of a game
reign: the period during which a monarch is sovereign
reign: a period during which something or somebody is dominant or powerful
Reign of Terror: the historic period (1793-94) during the French Revolution when thousands were executed
reign of terror: any period of brutal suppression thought to resemble the Reign of Terror in France
Rejoicing over the Law: (Judaism) a Jewish holy day celebrated on the 22nd or 23rd of Tishri to celebrate the completion of the annual cycle of readings of the Torah
Remembrance Sunday: the Sunday nearest to November 11 when those who died in World War I and World War II are commemorated
Renaissance: the period of European history at the close of the Middle Ages and the rise of the modern world; a cultural rebirth from the 14th through the middle of the 17th centuries
residence time: the period of time spent in a particular place
Restoration: the reign of Charles II in England; 1660-1685
Revolutionary calendar month: a month in the Revolutionary calendar
Robert E Lee's Birthday: celebrated in southern United States
Rogation Day: one of the three days before Ascension Day; observed by some Christians as days of supplication
Roman times: the time period during which Rome dominated Europe
Rosh Chodesh: (Judaism) the beginning of each month in the Jewish calendar; marked by a special liturgy
RTLT: the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point
rule: the duration of a monarch's or government's power
run: the continuous period of time during which something (a machine or a factory) operates or continues in operation
run-time: (computer science) the length of time it takes to execute a software program
running time: the length of time that a movie or tv show runs
Sabbath: a day of rest and worship: Sunday for most Christians; Saturday for the Jews and a few Christians; Friday for Muslims
sabbatical year: a sabbatical leave lasting one year
sabbatical: a leave usually taken every seventh year
Sabbatum: the seventh and last day of the week; observed as the Sabbath by Jews and some Christians
safe period: that time during a woman's menstrual cycle during which conception is least likely to occur (usually immediately before of after menstruation)
Saint Agnes's Eve: a Christian holy day
Saint Joseph: a Christian holy day
Saint Martin's summer: a period of unusually warm weather in the autumn
Saint Patrick's Day: a day observed by the Irish to commemorate the patron saint of Ireland
Saint Valentine's Day: a day for the exchange of tokens of affection
saint's day: a day commemorating a saint
Saints Peter and Paul: first celebrated in the 3rd century
Saphar: the second month of the Islamic calendar
school day: any day on which school is in session
school: the period of instruction in a school; the time period when school is in session
schooldays: the time of life when you are going to school
season: a recurrent time marked by major holidays
season: a period of the year marked by special events or activities in some field
season: one of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions
second trimester: time period extending from the 13th to the 27th week of gestation
seedtime: the time during which seeds should be planted
seedtime: any time of new development
semester: one of two divisions of an academic year
semester: half a year; a period of 6 months
semicentenary: the 50th anniversary (or the celebration of it)
September: the month following August and preceding October
Septuagesima Sunday: the 3rd Sunday before Lent (or the 9th before Easter)
sesquicentennial: the 150th anniversary (or the celebration of it)
Shaaban: the eighth month of the Islamic calendar
Shawwal: the tenth month of the Islamic calendar
sheepshearing: the time or season when sheep are sheared
shelf life: the length of time a packaged food or drug will last without deteriorating
Shevat: the fifth month of the civil year: the eleventh month of the ecclesiastical year in the Jewish calendar (in January and February)
shibah: (Judaism) a period of seven days of mourning after the death of close relative
Shrove Tuesday: the last day before Lent
Shrovetide: immediately preceding Lent
sick leave: a leave of absence from work because of illness
sidereal year: the time for the earth to make one complete revolution around the sun, relative to the fixed stars
silly season: a time usually late summer characterized by exaggerated news stories about frivolous matters for want of real news
silver age: (classical mythology) the second age of the world, characterized by opulence and irreligion; by extension, a period secondary in achievement to a golden age
silver jubilee: an anniversary celebrating the passage of 25 years
silver wedding anniversary: the 25th wedding anniversary
Siwan: the ninth month of the civil year; the third month of the ecclesiastical year in the Jewish calendar (in May and June)
snap: a spell of cold weather
social season: the season for major social events
Solemnity of Mary: (Roman Catholic Church) a holy day of obligation
space age: the age beginning with the first space travel; from 1957 to the present
span: the complete duration of something
speech day: an annual day in the schools when speeches are made and prizes are distributed
split run: a print run of a newspaper during which some articles or advertisements are changed to produce a different edition
split shift: a working shift divided into two periods of time with several hours in between
spring training: preseason training during the spring
spring: the season of growth
Sravana: the fifth month of the Hindu calendar
St Martin's Day: the feast of Saint Martin; a quarter day in Scotland
stint: an unbroken period of time during which you do something
Stone Age: (archeology) the earliest known period of human culture, characterized by the use of stone implements
study hall: a period of time during the school day that is set aside for study
sudden death: (sports) overtime in which play is stopped as soon as one contestant scores; e.g. football and golf
summer: the period of finest development, happiness, or beauty
summer school: an academic session during the summer; usually for remedial or supplementary study
summer: the warmest season of the year; in the northern hemisphere it extends from the summer solstice to the autumnal equinox
teens: the time of life between the ages of 12 and 20
telophase: the final stage of mitosis
telophase: the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle
tercentenary: the 300th anniversary (or the celebration of it)
term: a limited period of time
terminal leave: final leave before discharge from military service
test period: a period of time during which someone or something is tested
Tet: the New Year in Vietnam; observed for three days after the first full moon after January 20th
Tevet: the fourth month of the civil year; the tenth month of the ecclesiastical year (in December and January)
Texas Independence Day: Texans celebrate the anniversary of Texas' declaration of independence from Mexico in 1836
Thammuz: the tenth month of the civil year; the fourth month of the ecclesiastic year (in June and July)
Thanksgiving Day: fourth Thursday in November in the United States; second Monday in October in Canada; commemorates a feast held in 1621 by the Pilgrims and the Wampanoag
theatrical season: the season when new plays are produced
Thermidor: eleventh month of the Revolutionary calendar (July and August); the month of heat
third trimester: time period extending from the 28th week of gestation until delivery
Thursday: the fifth day of the week; the fourth working day
tiebreaker: overtime play in order to break a tie; e.g. tennis and soccer
time: an indefinite period (usually marked by specific attributes or activities)
time: a period of time considered as a resource under your control and sufficient to accomplish something
time limit: a time period within which something must be done or completed
time of life: a period of time during which a person is normally in a particular life state
time off: a time period when you are not required to work
time scale: an arrangement of events used as a measure of duration
times: a more or less definite period of time now or previously present
Tishri: the first month of the civil year; the seventh month of the ecclesiastical year in the Jewish calendar (in September and October)
Transfiguration Day: (Christianity) a church festival held in commemoration of the Transfiguration of Jesus
travel time: a period of time spent traveling
trick: a period of work or duty
trimester: one of three divisions of an academic year
trimester: a period of three months; especially one of the three three-month periods into which human pregnancy is divided
Trinity Sunday: eighth Sunday after Easter
triple-crown season: a season of baseball during which a player wins the triple crown
Tuesday: the third day of the week; the second working day
turn of the century: the period from about ten years before to ten years after a new century
turnaround: time need to prepare a vessel or ship for a return trip
Twelfth night: eve of Twelfth day; evening of January 5
Twelfthtide: the season of Epiphany
twelvemonth: a period of time containing 365 (or 366) days
twentieth century: the century from 1901 to 2000
United Nations Day: a day for celebrating the founding of the United Nations
Upper Paleolithic: the time period during which only modern Homo sapiens was known to have existed; ended about 10,000 years BC
uptime: a period of time when something (as a machine or factory) is functioning and available for use
usance: the period of time permitted by commercial usage for the payment of a bill of exchange (especially a foreign bill of exchange)
vac: informal term for vacation
Vaisakha: the second month of the Hindu calendar
Vendemiaire: first month of the Revolutionary calendar (September and October); the month of the grape harvest
Ventose: sixth month of the Revolutionary calendar (February and March); the windy month
vice-presidency: the tenure of a vice president
Victoria Day: a public holiday in Canada on the Monday on or before May 24th
Victorian age: a period in British history during the reign of Queen Victoria in the 19th century; her character and moral standards restored the prestige of the British monarchy but gave the era a prudish reputation
Victory Day: the day of a victory
voting age: the age at which a person is old enough to vote in public elections
Walpurgis Night: eve of May Day
wartime: a period of time during which there is armed conflict
washday: a day set aside for doing household laundry
Washington's Birthday: the day on which George Washington is remembered
watch: a period of time (4 or 2 hours) during which some of a ship's crew are on duty
watch: the period during which someone (especially a guard) is on duty
wedding anniversary: the anniversary of the day on which you were married (or the celebration of it)
wedding day: the day of a wedding
wedding night: the night after the wedding when bride and groom sleep together
Wednesday: the fourth day of the week; the third working day
wee: a short time
week from Monday: a time period of a week or more
week: hours or days of work in a calendar week
weekday: any day except Sunday (and sometimes except Saturday)
weekend: a time period usually extending from Friday night through Sunday; more loosely defined as any period of successive days including one and only one Sunday
weeknight: any night of the week except Saturday or Sunday
Whitsun Monday: the day after Whitsunday; a legal holiday in England and Wales and Ireland
Whitsun Tuesday: the day after Whitmonday
Whitsunday: seventh Sunday after Easter; commemorates the emanation of the Holy Spirit to the Apostles; a quarter day in Scotland
Whitsuntide: Christian holiday; the week beginning on Whitsunday (especially the first 3 days)
widowhood: the time of a woman's life when she is a widow
window: the time period that is considered best for starting or finishing something
winter: the coldest season of the year; in the northern hemisphere it extends from the winter solstice to the vernal equinox
work day: a day on which work is done
work time: a time period when you are required to work
workday: the amount of time that a worker must work for an agreed daily wage
Y2K: the year 2000 in the Gregorian calendar
year: the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun
year: a period of time occupying a regular part of a calendar year that is used for some particular activity
year dot: as long ago as anyone can remember
year of grace: any year of the Christian era
youth: the time of life between childhood and maturity
zygotene: the second stage of the prophase of meiosis