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NIST Time Scale Data and Bulletin Archive
|·||Notes on NIST Time Scale, Primary Standards and Services|
|·||Leap Second and UT1-UTC Information|
|·||UTC - UTC(NIST) correlation|
|·||UTC(USNO) - UTC(NIST) correlation|
NIST no longer sends the Time and Frequency Bulletin by mail.
However, the bulletin is produced monthly as a PDF document that can be downloaded here.
To display a bulletin, simply select the bulletin date from the menu and click the Get Data button. The bulletins are available back to January 1997.
The files are viewable using the Adobe Acrobat Reader.
The NIST Time Scale Data is updated monthly. Direct questions to: firstname.lastname@example.org