Surf Wiki
Save to docs
general/time-scales

From Surf Wiki (app.surf) — the open knowledge base

DUT1

Time scale with correction

Time scale with correction

DUT1 is a time correction equal to the difference between Universal Time (UT1), which is defined by Earth's rotation, and Coordinated Universal Time (UTC), which is defined by a network of precision atomic clocks, with a precision of +/- 0.1s.

:DUT1 = UT1 − UTC (with a precision of +/- 0.1s)

UTC is maintained via leap seconds, such that DUT1 remains within the range −0.9 s

Daily observed values of UT1− UTC for the past week, and daily forecast values for the coming year, are published by IERS Bulletin A, with more digits than for DUT1. Final values are published in the monthly IERS Bulletin B. DUT1 forecasts are published in IERS Bulletin D.

Several time signal services broadcast values of DUT1. CHU (Canada), HLA (South Korea), MSF (United Kingdom), and WWV (United States) transmit DUT1 with 0.1 s precision. In Russia, RWM, RTZ and the longwave RBU transmit DUT1 with 0.1 s precision and an additional correction dUT1 in 0.02 s increments.

Notes

References

  • ITU-R Recommendation TF.460-4: Standard-frequency and time-signal emissions. International Telecommunication Union.

References

  1. (1996-07-17). "Bulletin D – Product metadata".
  2. (2024-11-15). "Leap second and UT1−UTC information".
  3. "Time Signal Transmitter".
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

time-scales
Want to explore this topic further?

Ask Mako anything about DUT1 — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report