Historical clue formulations

• Super Bowl ___ (game played February 3, 2019) — 2019-03-03
• 53, in old Rome — 2018-03-19
• 53, in old Rome — 2007-04-09
• Year Trajan was born — 2006-05-10
• 53, in old Rome — 2005-02-08
• Chapter 53 — 2003-11-11
• Year Trajan was born — 2000-10-01
• CVI halved — 1998-07-28
• Year Trajan was born — 1998-04-04
• Next-to-last year in Claudius's reign — 1996-04-23