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NIST Time Scale Data Archive

Updated monthly


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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
2011-12-24
55919
5.8
2011-12-14
55909
5.6
2011-12-04
55899
5.0
2011-11-24
55889
3.0
2011-11-14
55879
4.4
2011-11-04
55869
6.5
2011-10-25
55859
8.5
2011-10-15
55849
9.6
2011-10-05
55839
10.8
2011-09-25
55829
10.6
2011-09-15
55819
10.3
2011-09-05
55809
9.3
2011-08-26
55799
8.8
2011-08-16
55789
6.9
2011-08-06
55779
5.9
2011-07-27
55769
4.1
2011-07-17
55759
4.3
2011-07-07
55749
2.9
2011-06-27
55739
2.1
2011-06-17
55729
3.4
2011-06-07
55719
4.6
2011-05-28
55709
4.8
2011-05-18
55699
6.5
2011-05-08
55689
7.9
2011-04-28
55679
8.6
2011-04-18
55669
10.3
2011-04-08
55659
12.0
2011-03-29
55649
10.8
2011-03-19
55639
10.3
2011-03-09
55629
9.5
2011-02-27
55619
9.4
2011-02-17
55609
9.8
2011-02-07
55599
10.2
2011-01-28
55589
9.1
2011-01-18
55579
9.1
2011-01-08
55569
8.2