When?

January
the first month of the year; begins 10 days after the winter solstice
 
dogwatch
either of two short watches: from 4-6 pm or 6-8 pm
 
New Year's Eve
the last day of the year
 
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
 
real time
(computer science) the time it takes for a process under computer control to occur
 
Pascha
the Christian festival of Easter
 
New York minute
a very short time (as the time it takes the eye to blink or the heart to beat)
 
24/7
uptime is 24 hours a day 7 days a week
 
bimester
a period of 2 months
 
off-day
a day when things go poorly
 
evening shift
the work shift during the evening (as 4 p.m. to midnight)
 
American Indian Day
US: the 4th Friday in September
 
workweek
hours or days of work in a calendar week
 
haying
the season for cutting and drying and storing grass as fodder
 
Commonwealth Day
British, anniversary of Queen Victoria's birth
 
split shift
a working shift divided into two periods of time with several hours in between
 
winter
the coldest season of the year; in the northern hemisphere it extends from the winter solstice to the vernal equinox
 
childhood
the time of person's life when they are a child
 
two weeks
a period of fourteen consecutive days
 
air alert
the time period during which military and civilian agencies are prepared for an enemy air attack
 
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