Answer:

dates

Answer	Crossword Clue
DATES	Some answers on history exams
DATES	Historical trivia
DATES	Sees regularly

DATES	Fruits at an oasis
DATES	Some like them hot
DATES	Results of using eHarmony
DATES	eHarmony users' hopes
DATES	Some history memorization
DATES	Takes out
DATES	Calendar units hidden in 20- and 61-Across and 11- and 35-Down
DATES	Sees romantically

DATES	Major Libyan export
DATES	Sees people
DATES	Cornerstone features
DATES	Determines the age of
DATES	Chewy fruit
DATES	Info on library slips
DATES	Appointments
DATES	Postmark parts

DATES	Promgoers
DATES	They're set for marriage
DATES	Sees socially
DATES	Times to remember?
DATES	Palm tree fruits
DATES	Historical info
DATES	Prom couples
DATES	Companions

DATES	Circled items
DATES	Timeline points