Historical clue formulations

• Anno ___ — 2024-10-02
• D, on a cornerstone — 2018-03-24
• D as in dates? — 2018-03-07
• Mater ___ (Mary, in Latin prayers) — 2008-05-15
• A.D. part — 2004-03-23
• Anno ___ — 2003-05-25