When?

feast day
a day designated for feasting
 
Middle Paleolithic
the time period of Neanderthal man; ended about 35,000 years BC
 
wedding day
the day of a wedding
 
Presidents' Day
the third Monday in February; commemorates both presidents Lincoln and Washington
 
last quarter
the last fourth of the Moon's period of revolution around the Earth
 
1900s
the decade from 1900 to 1909
 
day
the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis
 
Feast of the Unleavened Bread
(Judaism) a Jewish festival (traditionally 8 days from Nissan 15) celebrating the exodus of the Israelites from Egypt
 
rest day
a day set aside for rest
 
saint's day
a day commemorating a saint
 
widowhood
the time of a woman's life when she is a widow
 
night
a period of ignorance or backwardness or gloom
 
1530s
the decade from 1530 to 1539
 
mid-May
the middle part of May
 
golden wedding anniversary
the 50th wedding anniversary
 
half-moon
the time at which the Moon is at first or last quarter when half its face is illuminated
 
Transfiguration Day
(Christianity) a church festival held in commemoration of the Transfiguration of Jesus
 
quarter-century
a period of 25 years
 
thirty-something
the time of life between 30 and 40
 
February 29
the name of the day that is added during a leap year
 
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