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NIST USNO 2004 Archive
UTC(USNO) - UTC(NIST)
The United States Naval Observatory (USNO) and the National Institute of Standards and Technology (NIST) make regular comparisons of their respective time scales. These comparisons are made using GPS common-view measurements from up to approximately 10 GPS satellites. The table below lists recent differences between the two time scales.
Weekly UTC(USNO, Master Clock) - UTC(NIST)Values
| Date | MJD |
UTC(USNO)-UTC(NIST) (+/- 20 nanoseconds) |
|---|---|---|
| 2004-12-30 | 53369 | 10 ns |
| 2004-12-23 | 53362 | 13 ns |
| 2004-12-16 | 53355 | 13 ns |
| 2004-12-09 | 53348 | 14 ns |
| 2004-12-02 | 53341 | 16 ns |
| 2004-11-25 | 53334 | 14 ns |
| 2004-11-18 | 53327 | 13 ns |
| 2004-11-11 | 53320 | 11 ns |
| 2004-11-04 | 53313 | 10 ns |
| 2004-10-28 | 53306 | 10 ns |
| 2004-10-21 | 53299 | 11 ns |
| 2004-10-14 | 53292 | 12 ns |
| 2004-10-07 | 53285 | 11 ns |
| 2004-09-30 | 53278 | 11 ns |
| 2004-09-23 | 53271 | 11 ns |
| 2004-09-16 | 53264 | 13 ns |
| 2004-09-09 | 53257 | 11 ns |
| 2004-09-02 | 53250 | 7 ns |
| 2004-08-26 | 53243 | 6 ns |
| 2004-08-19 | 53236 | 4 ns |
| 2004-08-12 | 53229 | 3 ns |
| 2004-08-05 | 53222 | -1 ns |
| 2004-07-29 | 53215 | 0 ns |
| 2004-07-22 | 53208 | -3 ns |
| 2004-07-15 | 53201 | -2 ns |
| 2004-07-08 | 53194 | -1 ns |
| 2004-07-01 | 53187 | -1 ns |
| 2004-06-24 | 53180 | -1 ns |
| 2004-06-17 | 53173 | 0 ns |
| 2004-06-10 | 53166 | 3 ns |
| 2004-06-03 | 53159 | 7 ns |
| 2004-05-27 | 53152 | 9 ns |
| 2004-05-20 | 53145 | 13 ns |
| 2004-05-13 | 53138 | 17 ns |
| 2004-05-06 | 53131 | 17 ns |
| 2004-04-29 | 53124 | 18 ns |
| 2004-04-22 | 53117 | 17 ns |
| 2004-04-15 | 53110 | 14 ns |
| 2004-04-08 | 53103 | 10 ns |
| 2004-04-01 | 53096 | 4 ns |
| 2004-03-25 | 53089 | 1 ns |
| 2004-03-18 | 53082 | -1 ns |
| 2004-03-11 | 53075 | -2 ns |
| 2004-03-04 | 53068 | -6 ns |
| 2004-02-26 | 53061 | -12 ns |
| 2004-02-19 | 53054 | -15 ns |
| 2004-02-12 | 53047 | -11 ns |
| 2004-02-05 | 53040 | -17 ns |
| 2004-01-29 | 53033 | -21 ns |
| 2004-01-22 | 53026 | -22 ns |
| 2004-01-15 | 53019 | -24 ns |
| 2004-01-08 | 53012 | -21 ns |
| 2004-01-01 | 53005 | -19 ns |