| 2021-05-20 | Prime meridian std. |
| 2020-09-26 | Prime meridian std. |
| 2020-07-26 | Prime meridian std. |
| 2020-04-15 | Astronomers' std. |
| 2016-04-23 | Astronomers' std. |
| 2015-05-10 | Astronomer's std. |
| 2014-10-28 | Prime meridian std. |
| 2013-09-15 | Setting at 0 degrees long. |
| 2013-09-06 | Prime meridian std. |
| 2013-07-04 | Prime meridian std. |
| 2012-12-01 | Astronomer's calculation: Abbr. |
| 2012-05-22 | Astronomical observation std. |
| 2011-11-09 | Prime meridian std. |
| 2010-01-06 | Prime meridian std. |
| 2009-08-09 | Prime meridian std. |
| 2009-07-05 | Prime meridian std. |
| 2007-03-03 | Setting at 0 degrees long. |
| 2006-10-15 | Prime meridian std. |
| 2006-07-14 | Standard setting at 0° long. |
| 2006-06-12 | Prime meridian std. |
| 2004-02-01 | Clock std. |
| 2000-04-07 | Standard setting at 0 degrees long. |
| 1998-05-24 | Clock std. |
| 1996-09-15 | Astron. clock setting |