Historical clue formulations

• 6-9 months? — 2020-12-04
• One of the four seasons — 2013-04-23
• "Suddenly, Last ___" (1959 film starring 55-/17-Across) — 2011-03-29
• Kind of romance — 2010-04-25
• Time to burn? — 2008-03-28
• Time off, maybe — 2006-12-07
• Kind of school — 1997-08-23