Historical clue formulations

• Labor Day follower: Abbr. — 2026-03-05
• Rare day for an N.F.L. game: Abbr. — 2025-12-25
• Mardi Gras day, in brief — 2025-12-17
• What "Mardi" means in "Mardi Gras": Abbr. — 2023-08-09
• Mon. follower — 2023-06-13
• When "NCIS" has aired for most of its run: Abbr. — 2023-03-10
• Mon. follower — 2022-06-20
• Day associated with Mars, in astrology: Abbr. — 2022-06-03
• Third column on a calendar: Abbr. — 2022-05-08
• Election day in the U.S.: Abbr. — 2021-06-15
• Third of seven columns: Abbr. — 2020-10-04
• When "Laverne & Shirley" ran for most of its run: Abbr. — 2020-08-30
• Follower of 76-Down: Abbr. — 2020-01-26
• Calendar abbr. — 2019-11-23
• Election Day in the U.S.: Abbr. — 2019-10-07
• When "Roseanne" aired for most of its original run: Abbr. — 2019-08-22
• Calendar column: Abbr. — 2019-02-24
• Time to vote: Abbr. — 2018-08-26
• Election day: Abbr. — 2018-05-31
• Calendar abbr. — 2015-09-16
• End of many a long race: Abbr. — 2014-09-13
• Election day: Abbr. — 2014-06-03
• Meatless day in W.W. II: Abbr. — 2014-03-30
• Day of the week of the great stock market crash, Oct. 29, 1929 — 2014-02-08
• Night on which "60 Minutes" originally aired: Abbr. — 2014-02-05
• Wed. preceder — 2013-09-23
• Mardi Gras, for one: Abbr. — 2012-08-03
• Election day: Abbr. — 2011-11-07
• Wed. preceder — 2011-03-07
• There is a "super" one every four yrs. — 2011-02-03
• Voting day: Abbr. — 2010-12-12
• U.S. Election Day, e.g.: Abbr. — 2010-08-30
• Day of the wk. — 2009-05-10
• Shrovetide concluder: Abbr. — 2008-11-22
• Night that "Happy Days" was on: Abbr. — 2007-12-19
• Calendar column: Abbr. — 2007-05-23
• Election day: Abbr. — 2007-03-18
• Calendar abbr. — 2007-02-01
• Election Day, e.g.: Abbr. — 2006-07-18
• Datebook abbr. — 2006-06-04
• "Black" day in the stock market crash, 10/29/1929: Abbr. — 2005-10-14
• Calendar abbr. — 2005-04-03
• Election day: Abbr. — 2005-01-20
• Calendar col. — 2004-02-29
• Calendar abbr. — 2003-09-25
• Mardi Gras, e.g.: Abbr. — 2003-07-31
• Wed. preceder — 2003-06-02
• It's named for a Germanic war god: Abbr. — 2003-03-14
• Super time?: Abbr. — 2002-12-05
• Third col. on a calendar — 2001-03-26