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NIST Time Scale Data Archive

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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
2008-12-29   54829 4.1
2008-12-19   54819 2.5
2008-12-09   54809 0.7
2008-11-29   54799 0.5
2008-11-19   54789 -1.0
2008-11-09   54779 -2.1
2008-10-30   54769 -3.3
2008-10-20   54759 -5.7
2008-10-10   54749 -5.4
2008-09-30   54739 -4.7
2008-09-20   54729 -2.0
2008-09-10   54719 -1.2
2008-08-31   54709 -1.4
2008-08-21   54699 0.9
2008-08-11   54689 1.3
2008-08-01   54679 3.0
2008-07-22   54669 3.5
2008-07-12   54659 4.1
2008-07-02   54649 3.9
2008-06-22   54639 1.1
2008-06-12   54629 -2.0
2008-06-02   54619 -4.6
2008-05-23   54609 -7.8
2008-05-13   54599 -8.4
2008-05-03   54589 -10.2
2008-04-23   54579 -10.1
2008-04-13   54569 -12.8
2008-04-03   54559 -12.5
2008-03-24   54549 -12.6
2008-03-14   54539 -13.0
2008-03-04   54529 -9.9
2008-02-23   54519 -6.7
2008-02-13   54509 -5.1
2008-02-03   54499 -3.8
2008-01-24   54489 -1.2
2008-01-14   54479 -0.9
2008-01-04   54469 1.3