Last TP Data Published by BIPM
Coordinated Universal Time UTC and its local realization UTC(TP). Computed values of [UTC−UTC(TP)] and uncertainties valid for the period of this Circular.
From 2006 January 1, 0h UTC, TAI−UTC = 33 s. From 2009 January 1, 0h UTC, TAI−UTC = 34 s.
| Date 0h UTC | Dec 29 | Jan 3 | Jan 8 | Jan 13 | Jan 18 | Jan 23 | Jan 28 | Uncertainty/ns | ||
| MJD | 55194 | 55199 | 55204 | 55209 | 55214 | 55219 | 55224 | uA | uB | u |
| -15.5 | -18.4 | -16.9 | -11.5 | -10.5 | -17.6 | -19.7 | 0.4 | 5.1 | 5.1 | |
| Date 0h UTC | Jan 28 | Feb 2 | Feb 7 | Feb 12 | Feb 17 | Feb 22 | Feb 27 | Uncertainty/ns | ||
| MJD | 55224 | 55229 | 55234 | 55239 | 55244 | 55249 | 55254 | uA | uB | u |
| -19.7 | -19.7 | -12.9 | -19.0 | -13.7 | -10.9 | -10.8 | 0.3 | 5.2 | 5.2 | |
| Date 0h UTC | Feb 27 | Mar 4 | Mar 9 | Mar 14 | Mar 19 | Mar 24 | Mar 29 | Uncertainty/ns | ||
| MJD | 55254 | 55259 | 55264 | 55269 | 55274 | 55279 | 55284 | uA | uB | u |
| -10.8 | -12.2 | -9.4 | -6.4 | -8.1 | -12.6 | -14.0 | 0.3 | 5.0 | 5.0 | |
| Date 0h UTC | Mar 29 | Apr 3 | Apr 8 | Apr 13 | Apr 18 | Apr 23 | Apr 28 | Uncertainty/ns | ||
| MJD | 55284 | 55289 | 55294 | 55299 | 55304 | 55309 | 55314 | uA | uB | u |
| -14.0 | -9.0 | -12.4 | -6.7 | -6.6 | -7.5 | -9.2 | 0.3 | 5.0 | 5.0 | |
| Date 0h UTC | Apr 28 | May 3 | May 8 | May 13 | May 18 | May 23 | May 28 | Uncertainty/ns | ||
| MJD | 55314 | 55319 | 55324 | 55329 | 55334 | 55339 | 55344 | uA | uB | u |
| -9.2 | -9.0 | -4.5 | -4.3 | -10.0 | -10.9 | -12.5 | 0.3 | 5.0 | 5.0 | |
| Date 0h UTC | May 28 | Jun 2 | Jun 7 | Jun 12 | Jun 17 | Jun 22 | Jun 27 | Uncertainty/ns | ||
| MJD | 55344 | 55349 | 55354 | 55359 | 55364 | 55369 | 55374 | uA | uB | u |
| -12.5 | -9.9 | -5.9 | -10.5 | -8.2 | -6.5 | -10.9 | 0.4 | 5.1 | 5.1 | |
| Date 0h UTC | Jun 27 | Jul 2 | Jul 7 | Jul 12 | Jul 17 | Jul 22 | Jul 27 | Uncertainty/ns | ||
| MJD | 55374 | 55379 | 55384 | 55389 | 55394 | 55399 | 55404 | uA | uB | u |
| -10.9 | -18.6 | -15.9 | -16.0 | -17.1 | -11.7 | -8.1 | 0.3 | 5.1 | 5.1 | |
Monthly Clock Rates
Monthly rates of TAI−clock for intervals of one month ending at the given dates (unit is ns/day, 0.00 denotes that the clock was not used).
| Date | MJD | Clocks | ||||
|---|---|---|---|---|---|---|
| S/N 154 | S/N 163 | S/N 326 | S/N 1227 | S/N 2476 | ||
| 29 Dec 2009 | 55194 | 10.66 | 3.02 | -71.48 | 12.92 | 3.79 |
| 28 Jan 2010 | 55224 | 10.35 | 3.94 | -71.02 | 13.10 | 4.13 |
| 27 Feb 2010 | 55254 | 9.89 | 4.09 | -71.70 | 13.44 | 4.48 |
| 29 Mar 2010 | 55284 | 11.96 | 5.97 | -71.41 | 13.07 | 4.41 |
| 28 Apr 2010 | 55314 | 8.87 | 7.18 | -71.44 | 13.30 | 5.22 |
| 28 May 2010 | 55344 | 10.02 | 9.34 | -71.83 | 12.99 | 5.06 |
| 27 Jun 2010 | 55374 | 11.21 | 10.29 | -72.54 | 13.20 | 4.94 |
| 27 Jul 2010 | 55404 | 10.55 | 11.44 | -72.10 | 13.28 | 5.42 |
Relative Clock Weights
Relative weights (in percent) of the clocks for intervals of one month ending at the given dates.
| Date | MJD | Clocks | ||||
|---|---|---|---|---|---|---|
| S/N 154 | S/N 163 | S/N 326 | S/N 1227 | S/N 2476 | ||
| 29 Dec 2009 | 55194 | - | - | - | 0.312 | - |
| 28 Jan 2010 | 55224 | - | - | - | 0.391 | - |
| 27 Feb 2010 | 55254 | 0.124 | - | 0.049 | 0.739 | 0.428 |
| 29 Mar 2010 | 55284 | 0.122 | 0.047 | 0.063 | 0.758 | 0.496 |
| 28 Apr 2010 | 55314 | 0.071 | 0.028 | 0.079 | 0.742 | 0.284 |
| 28 May 2010 | 55344 | 0.096 | 0.018 | 0.098 | 0.746 | 0.322 |
| 27 Jun 2010 | 55374 | 0.118 | 0.014 | 0.091 | 0.718 | 0.369 |
| 27 Jul 2010 | 55404 | 0.144 | 0.012 | 0.100 | 0.712 | 0.362 |