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Physical Measurement Laboratory / Time and Frequency Division

Time Realization and Distribution Group

NIST UTC 2024 Archive

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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)

DateMJDUTC-UTC(NIST) ns
Dec. 25, 202460669-0.5
Dec. 15, 202460659-1.7
Dec. 5, 202460649-0.0
Nov. 25, 2024606392.4
Nov. 15, 2024606291.7
Nov. 5, 2024606191.5
Oct. 26, 2024606090.0
Oct. 16, 202460599-2.2
Oct. 6, 202460589-2.0
Sep. 26, 202460579-0.2
Sep. 16, 202460569-0.8
Sep. 6, 202460559-1.5
Aug. 27, 202460549-1.1
Aug. 17, 202460539-0.1
Aug. 7, 2024605290.6
Jul. 28, 2024605190.2
Jul. 18, 202460509-0.1
Jul. 8, 2024604990.2
Jun. 28, 2024604890.1
Jun. 18, 202460479-0.0
Jun. 8, 202460469-0.2
May 29, 202460459-0.0
May 19, 2024604490.5
May 9, 2024604390.3
Apr. 29, 202460429-0.2
Apr. 19. 202460419-0.1
Apr. 9, 2024604092.0
Mar. 30, 2024603990.0
Mar. 20, 202460389-1.6
Mar. 10, 202460379-0.5
Feb. 29, 202460369-0.7
Feb. 19, 202460359-0.4
Feb. 9, 202460349-1.5
Jan. 30, 202460339-1.7
Jan. 20, 202460329-1.6
Jan. 10, 202460319-2.0
Physics and Time and frequency
Created April 8, 2025
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