ATMO
| Date | Clue |
|---|---|
| 2020-08-30 | Prefix with -sphere |
| 2019-07-30 | Prefix with sphere |
| 2016-10-17 | Prefix with sphere |
| 2013-10-04 | Vapor: Prefix |
| 2011-01-02 | Prefix with sphere |
| 2010-02-11 | Spherical beginning? |
| 2008-09-14 | Prefix with sphere |
| 2007-11-13 | Prefix with sphere |
| 2005-04-18 | Prefix with sphere |
| 2004-09-12 | Prefix with sphere |
| 2004-07-14 | Air: Prefix |
| 2004-03-23 | Spherical opening? |
| 2003-01-11 | Prefix with meter or sphere |
| 2002-06-12 | Prefix with sphere |
| 2000-10-24 | Spheric opening? |
| 2000-03-08 | Sphere starter |
| 1999-08-29 | Prefix with sphere |
| 1999-01-16 | Prefix with sphere |
| 1996-06-03 | Prefix with sphere |
| 1995-12-30 | Prefix with meter or sphere |
| 1995-11-16 | Sphere starter |
| 1995-08-22 | Prefix with sphere |
| 1995-04-28 | Sphere starter |
| 1994-09-12 | Prefix with sphere |
| 1994-07-31 | Sphere starter |