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NIST UTC 2023 Archive

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)

DateMJDUTC-UTC(NIST) ns
Dec. 31, 202360309-0.8
Dec. 21, 202360299-1.0
Dec. 11, 2023602891.2
Dec. 1, 2023602790.0
Nov. 21, 202360269-1.0
Nov. 11, 202360259-0.6
Nov. 1, 2023602490.2
Oct. 22. 2023602391.6
Oct. 12, 2023602291.9
Oct. 2, 2023602191.7
Sep. 22, 2023602090.5
Sep. 12, 2023601990.1
Sep. 2, 2023601890.0
Aug. 23, 202360179-0.7
Aug. 13, 202360169-0.7
Aug. 3, 2023601590.8
Jul. 24, 2023601490.8
Jul. 14, 2023601390.8
Jul. 4, 202360129-0.2
Jun. 24, 202360119-0.8
Jun. 14, 202360109-0.5
Jun. 4, 202360099-0.6
May 25, 202360089-2.0
May 15, 202360079-2.2
May 5, 202360069-0.8
Apr. 25, 2023600590.9
Apr. 15, 2023600491.8
Apr. 5, 2023600391.6
Mar. 26, 2023600290.1
Mar. 16, 202360019-0.3
Mar. 6, 202360009-1.1
Feb. 24, 202359999-2.0
Feb. 14, 202359989-1.5
Feb. 4, 2023599790.7
Jan. 25, 2023599691.6
Jan. 15, 2023599591.6
Jan. 5, 2023599490.8
Created June 7, 2024