NIST Time Scale Data Archive
Updated monthly
Return to Archive index 2003 2004 2005 2006 2007 2008 2009 2010 2012 Current Year
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
|
