| 2026-03-26 | Solar revolutions |
| 2025-12-07 | Trips around the sun |
| 2025-07-13 | Quite a while |
| 2025-06-24 | 1917, 1984, 2001 and others |
| 2023-07-16 | They're sometimes in Roman numerals |
| 2021-07-27 | Junior and senior |
| 2021-03-10 | Junior and senior |
| 2020-03-23 | What tree rings represent |
| 2019-04-28 | Data for auto aficionados |
| 2018-08-11 | All these ___ ... |
| 2018-04-24 | What birthday cake candles represent |
| 2018-04-09 | Freshman, sophomore, etc. |
| 2016-07-14 | See 49-Across |
| 2015-12-30 | See 64-Across |
| 2014-11-01 | Sentence units |
| 2013-02-05 | See 66-Across |
| 2013-01-10 | A long time |
| 2010-10-25 | 1492, 1776, 2001, etc. |
| 2010-09-27 | Senior, junior and sophomore |
| 2009-11-22 | College classes |
| 2009-06-02 | Sentence units |
| 2005-12-07 | A long time |
| 2004-12-26 | A long time |
| 2003-05-20 | 2001 and 2010 |
| 2002-07-14 | Quite a while |
| 2002-05-09 | Long time |
| 2001-09-13 | A dog's age |
| 2001-01-06 | Sentence units |
| 2000-03-01 | Orbital periods |
| 1998-07-26 | Millennium makeup |
| 1997-10-28 | Freshman, sophomore, etc. |
| 1997-07-21 | Sophomore and junior, e.g. |
| 1996-03-10 | Vineyard data |
| 1996-01-08 | Calendar periods |
| 1996-01-03 | Graduating classes |
| 1995-12-06 | Long time |
| 1994-09-21 | Long time |