Historical clue formulations

• What alumni do on important anniversaries — 2020-08-24
• Get back together — 2018-01-26
• Get together after school? — 2016-08-27
• Attend a homecoming, say — 2013-12-04
• Get the old gang together — 2013-08-11
• Attend homecoming, say — 2011-11-28
• Get the class back together — 2008-05-11
• Catch up with the class — 2007-04-21
• Alums do it — 2007-03-25
• Get together with old classmates, say — 2004-09-06
• Get back together — 2000-03-16
• What some grads do — 2000-01-27
• Get the class back together — 1999-07-16
• Get together, as grads — 1995-05-30