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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 |
|---|---|---|
| 2026-09-26 | 61309 | 0.9 |
| 2026-09-16 | 61299 | 0.4 |
| 2026-09-06 | 61289 | -0.4 |
| 2026-08-27 | 61279 | -1 |
| 2026-08-17 | 61269 | -1.2 |
| 2026-08-07 | 61259 | -1.1 |
| 2026-07-28 | 61249 | -1 |
| 2026-07-18 | 61239 | -0.4 |
| 2026-07-08 | 61229 | 0.3 |
| 2026-06-28 | 61219 | 0 |
| 2026-06-18 | 61209 | -0.1 |
| 2026-06-08 | 61199 | -0.6 |
| 2026-05-29 | 61189 | -0.3 |
| 2026-05-19 | 61179 | 0.2 |
| 2026-05-09 | 61169 | 0.9 |
| 2026-04-29 | 61159 | 1 |
| 2026-04-19 | 61149 | 1 |
| 2026-04-09 | 61139 | 0.7 |
| 2026-03-30 | 61129 | -0.1 |
| 2026-03-20 | 61119 | -0.1 |
| 2026-03-10 | 61109 | -0.1 |
| 2026-02-28 | 61099 | 0.2 |
| 2026-02-18 | 61089 | 1.3 |
| 2026-02-08 | 61079 | 0.9 |
| 2026-01-29 | 61069 | -1 |
| 2026-01-19 | 61059 | -1.7 |
| 2026-01-09 | 61049 | 0.6 |
Created September 18, 2009, Updated October 28, 2026