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TF Bulletin

The Time & Frequency Bulletin contains information regarding the international time scale UTC (Coordinated Universal Time) and the South African prediction of UTC, designated as UTC(ZA). Users requiring accurate frequency transfer can use this information to establish traceability to UTC(ZA) using GPS as a common view source together with the information in these bulletins.

The bulletings also contains information regarding the relationship between UTC, TAI and GPS time. Any leapsecond information will be made available in the bulletin.

From April 2014, the BIPM no longer publish GPS tracking schedules, since single channel receivers has been replaced by multi-channel receivers. All tracking schedules should be reference to MJD 50722 (1 October 1997).

Latest Bulletins

March 2024 - 202404.txt
February 2024 - 202403.txt
January 2024 - 202402.txt
December 2023 - 202401.txt
November 2023 - 202312.txt
October 2023 - 202311.txt
September 2023 - 202310.txt
August 2023 - 202309.txt
July 2023 - 202308.txt
June 2023 - 202307.txt
May 2023 - 202306.txt
April 2023 - 202305.txt

Archived copies

2024.zip
2023.zip
2022.zip
2021.zip
2020.zip
2019.zip
2018.zip
2017.zip
2016.zip
2015.zip
2014.zip
2013.zip
2012.zip

For specific applications or more detail on the presented data or analysis of the data,
please contact the Time and Frequency project at the address shown below.

National Metrology Institute of South Africa
Time and Frequency Metrology
Private Bax X34
Lynnwood Ridge
0040

Telephone: (012) 841 2245
Telefax: (012) 841 2131