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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
2004-12-30   53369 3.5
2004-12-20   53359 4.2
2004-12-10   53349 5.1
2004-11-30   53339 4.7
2004-11-20   53329 2.5
2004-11-10   53319 2.6
2004-10-31   53309 3.4
2004-10-21   53299 1.4
2004-10-11   53289 3.7
2004-10-01   53279 3.5
2004-09-21   53269 4.1
2004-09-11   53259 4.7
2004-09-01   53249 2.5
2004-08-22   53239 0.9
2004-08-12   53229 -2.5
2004-08-02   53219 -2.5
2004-07-23   53209 -4.0
2004-07-13   53199 -6.0
2004-07-03   53189 -5.3
2004-06-23   53179 -6.4
2004-06-13   53169 -5.2
2004-06-03   53159 0.2
2004-05-24   53149 5.4
2004-05-14   53139 9.9
2004-05-04   53129 10.5
2004-04-24   53119 7.5
2004-04-14   53109 6.9
2004-04-04   53099 6.7
2004-03-25   53089 6.3
2004-03-15   53079 4.1
2004-03-05   53069 3.2
2004-02-24   53059 1.2
2004-02-14   53049 -2.0
2004-02-04   53039 -4.5
2004-01-25   53029 -4.6
2004-01-15   53019 -4.2
2004-01-05   53009 -3.6