| 2025-10-08 | More than 2,000 years ago, for short |
| 2025-05-05 | Pre-A.D., in dating |
| 2024-06-09 | Old dating inits. |
| 2024-05-24 | Pre-A.D. |
| 2024-03-10 | Dating inits. |
| 2023-09-26 | Pre-year 1, in brief |
| 2023-05-07 | Abbr. in ancient dates |
| 2021-12-16 | Pre-A.D. |
| 2021-03-13 | Dating inits. |
| 2020-12-06 | Dating notation: Abbr. |
| 2020-06-05 | Dating abbr. |
| 2020-02-18 | Abbreviation in ancient dates |
| 2019-07-20 | Dating letters |
| 2017-09-20 | Pre-A.D. [2] |
| 2016-12-16 | Pre-A.D. |
| 2015-11-27 | Dating inits. |
| 2015-05-26 | Abbr. in dating |
| 2015-01-27 | Letters after old dates |
| 2014-07-15 | Pre-A.D. |
| 2014-05-17 | Dating inits. |
| 2012-09-18 | Letters after a long-ago date |
| 2010-05-30 | Letters in an old date |
| 2010-05-05 | Pre-A.D. |
| 2009-09-12 | Letters used in dating |
| 2008-01-05 | Dating letters |
| 2005-04-24 | Dating letters |
| 2003-06-14 | Letters accompanying some 2,000-year-old+ dates |
| 1995-07-30 | Bridge builder's deg. |