When?

Reconstruction Period
the period after the American Civil War when the southern states were reorganized and reintegrated into the Union; 1865-1877
 
wedding anniversary
the anniversary of the day on which you were married (or the celebration of it)
 
Adar
the sixth month of the civil year; the twelfth month of the ecclesiastic year in the Jewish calendar (in February and March)
 
seventies
the time of life between 70 and 80
 
Eolithic Age
the earliest part of the Stone Age marked by the earliest signs of human culture
 
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
 
Feast of the Unleavened Bread
(Judaism) a Jewish festival (traditionally 8 days from Nissan 15) celebrating the exodus of the Israelites from Egypt
 
workday
the amount of time that a worker must work for an agreed daily wage
 
Shrove Tuesday
the last day before Lent
 
evening
the latter part of the day (the period of decreasing daylight from late afternoon until nightfall)
 
Ventose
sixth month of the Revolutionary calendar (February and March); the windy month
 
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
 
kip
sleep
 
boyhood
the childhood of a boy
 
prehistory
the time during the development of human culture before the appearance of the written word
 
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
 
1820s
the decade from 1820 to 1829
 
term
a limited period of time
 
Purim
(Judaism) a Jewish holy day commemorating their deliverance from massacre by Haman
 
exhibition season
the time before the regular games begin when football or baseball teams play practice games
 
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