NIST Time Scale Data Archive
Updated monthly
Return to Archive index 2003 2004 2005 2006 2007 2008 2010 2011 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
|
|
2009-12-24
|
55189
|
16.0
|
|
2009-12-14
|
55179
|
17.9
|
|
2009-12-04
|
55169
|
18.1
|
|
2009-11-24
|
55159
|
15.6
|
|
2009-11-14
|
55149
|
14.1
|
|
2009-11-04
|
55139
|
7.8
|
|
2009-10-25
|
55129
|
3.9
|
|
2009-10-15
|
55119
|
0.6
|
|
2009-10-05
|
55109
|
-5.2
|
|
2009-09-25
|
55099
|
-10.2
|
|
2009-09-15
|
55089
|
-13.8
|
|
2009-09-05
|
55089
|
-15.1
|
|
2009-08-26
|
55069
|
-15.8
|
|
2009-08-16
|
55059
|
-16.4
|
|
2009-08-06
|
55049
|
-14.7
|
|
2009-07-27
|
55039
|
-12.3
|
|
2009-07-17
|
55029
|
-9.6
|
|
2009-07-07
|
55019
|
-4.9
|
|
2009-06-27
|
55009
|
0
|
|
2009-06-17
|
54999
|
4.7
|
|
2009-06-07
|
55989
|
5.7
|
|
2009-05-28
|
54979
|
10.3
|
|
2009-05-18
|
54969
|
11.2
|
|
2009-05-08
|
54959
|
10.8
|
2009-04-28
|
54949
|
9.7
|
|
2009-04-18
|
54939
|
7.0
|
|
2009-04-08
|
54929
|
10.0
|
|
2009-03-29
|
54919
|
7.5
|
|
2009-03-18
|
54909
|
7.1
|
|
2009-03-09
|
54899
|
4.9
|
|
2009-02-27
|
54889
|
4.3
|
|
2009-02-17
|
54879
|
2.0
|
|
2009-02-07
|
54869
|
1.7
|
|
2009-01-28
|
54859
|
3.9
|
|
2009-01-18
|
54849
|
3.9
|
|
2009-01-08
|
54839
|
4.0
|
