Historical clue formulations

• Enterprise standard — 2016-11-05
• Part of a certain log — 2012-07-28
• Captain's log detail — 2012-05-10
• Time on the Enterprise — 2010-01-14
• Detail in a captain's log — 2008-10-11
• Enterprise log entry — 2007-10-04
• It's not measured in traditional years — 2006-04-22
• Captain Kirk's log entry — 1998-04-26
• Captain's log heading — 1997-06-06
• Calendar period, to Kirk — 1993-11-22