Historical clue formulations

• Timetable: Abbr. — 2024-02-04
• Port Authority posting: Abbr. — 2019-01-27
• Amtrak posting: Abbr. — 2017-06-28
• Timetable: Abbr. — 2013-06-04
• Part of an I.R.S. return: Abbr. — 2005-08-03
• Flight board, e.g.: Abbr. — 2000-06-12
• Bus station posting: Abbr. — 1997-01-27