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NIST UTC 2018 Archive
UTC - UTC (NIST)
The deviation of UTC(NIST) from UTC has been less than +/-100 ns since July 6, 1994. The table below shows values of UTC - UTC(NIST) as supplied by the BIPM Circular T for the most recent period in which data are available.
UTC - UTC(NIST)Values (at 10-day intervals)
| Date | MJD | UTC-UTC(NIST) ns |
|---|---|---|
| 2018-12-27 | 58479 | 0.3 ns |
| 2018-12-17 | 58469 | 3 ns |
| 2018-12-07 | 58459 | 3.7 ns |
| 2018-11-27 | 58449 | 2 ns |
| 2018-11-17 | 58439 | 1.1 ns |
| 2018-11-07 | 58429 | 0.7 ns |
| 2019-10-28 | 58419 | 0.1 ns |
| 2019-10-18 | 58409 | -0.6 ns |
| 2019-10-08 | 58399 | -1.3 ns |
| 2018-09-28 | 58389 | 0.5 ns |
| 2018-09-18 | 58379 | 2.5 ns |
| 2018-09-08 | 57369 | 2.2 ns |
| 2018-08-29 | 58359 | 0.1 ns |
| 2018-08-19 | 58349 | 0.2 ns |
| 2018-08-09 | 58339 | -0.5 ns |
| 2018-07-30 | 58329 | -1 ns |
| 2018-07-20 | 58319 | -0.4 ns |
| 2018-07-10 | 58309 | 0.3 ns |
| 2018-06-30 | 58299 | 1.5 ns |
| 2018-06-20 | 58289 | 1.7 ns |
| 2018-06-10 | 58279 | 2.4 ns |
| 2018-05-31 | 58269 | 2.7 ns |
| 2018-05-21 | 58259 | 0.1 ns |
| 2018-05-11 | 58249 | -2.2 ns |
| 2018-05-01 | 58239 | -4 ns |
| 2018-04-21 | 58229 | -1.5 ns |
| 2018-04-11 | 58219 | 0.1 ns |
| 2018-04-01 | 58209 | 1.2 ns |
| 2018-03-22 | 58199 | -0.7 ns |
| 2018-03-12 | 58189 | -2.9 ns |
| 2018-03-02 | 58179 | -2.6 ns |
| 2018-02-20 | 58169 | -1.0 ns |
| 2018-02-10 | 58159 | 0.1 ns |
| 2018-01-31 | 58149 | -0.3 ns |
| 2018-01-21 | 58139 | -0.9 ns |
| 2018-01-11 | 58129 | 0.1 ns |
| 2018-01-01 | 58119 | -0.8 ns |
Created March 28, 2019, Updated October 7, 2020