NEAPS
| Date | Clue |
|---|---|
| 2019-09-08 | They follow springs by about a week |
| 2017-12-07 | Occurrences during half-moons |
| 2014-09-03 | Minimum-range tides |
| 2014-06-19 | Some tides |
| 2012-02-03 | Some tides |
| 2011-08-05 | Occurrences between springs |
| 2010-03-24 | Some tides |
| 2009-11-29 | Some tides |
| 2007-02-18 | Certain tides |
| 2003-10-15 | Some tides |
| 2003-08-17 | Certain 111-Downs |
| 2001-12-20 | Some tides |
| 2000-09-24 | Some tides |
| 1998-05-07 | Semimonthly tides |
| 1997-09-25 | Tidal points |
| 1995-05-28 | Some tides |
| 1994-10-06 | Tide types |