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UTC-UTC (NIST) correlation
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 |
|---|---|---|
| Oct. 31, 2025 | 60979 | 0.6 |
| Oct. 21, 2025 | 60969 | 1.8 |
| Oct. 11, 2025 | 60959 | 1.9 |
| Oct. 1, 2025 | 60949 | 1.0 |
| Sep. 21, 2025 | 60939 | 0.6 |
| Sep. 11, 2025 | 60929 | 0.2 |
| Sep. 1, 2025 | 60919 | -0.4 |
| Aug. 22, 2025 | 60909 | 1.7 |
| Aug. 12, 2025 | 60899 | 1.3 |
| Aug. 2, 2025 | 60889 | -0.2 |
| Jul. 23, 2025 | 60879 | -0.3 |
| Jul. 13, 2025 | 60869 | 0.3 |
| Jul. 3, 2025 | 60859 | -0.2 |
| Jun. 23, 2025 | 60849 | -1.1 |
| Jun. 13, 2025 | 60839 | -1.5 |
| Jun. 3, 2025 | 60829 | -0.9 |
| May 24, 2025 | 60819 | -0.0 |
| May 14, 2025 | 60809 | 0.7 |
| May 4, 2025 | 60799 | -0.1 |
| Apr. 24, 2025 | 60789 | -0.6 |
| Apr. 14, 2025 | 60779 | -0.6 |
| Apr. 4, 2025 | 60769 | -0.5 |
| Mar. 25, 2025 | 60759 | -0.1 |
| Mar. 15, 2025 | 60749 | -0.0 |
| Mar. 5, 2025 | 60739 | -0.3 |
| Feb. 23, 2025 | 60729 | 0.2 |
| Feb. 13, 2025 | 60719 | 0.4 |
| Feb. 3, 2025 | 60709 | 0.6 |
| Jan. 24, 2025 | 60699 | 0.8 |
| Jan. 14, 2025 | 60689 | 0.6 |
| Jan. 4, 2025 | 60679 | 0.6 |
Created September 18, 2009, Updated December 1, 2025