Editing Time standard (section)

==External links==
* [https://tycho.usno.th.mil/cgi-bin/timer.pl Current time]{{Dead link|date=December 2024 |bot=InternetArchiveBot |fix-attempted=yes }} according to the [[bservatory]] (get the current time)
* [https://tycho.usno.mil/systime.html Systems of Time]{{Dead link|date=December 2024 |bot=InternetArchiveBot |fix-attempted=yes }} by Demetrios Matsakis, Director, Time Service Dept., [[United States Naval Observatory]]
* [http://tycho.usno.navy.mil/leapsec.html USNO article on the definition of seconds and leap seconds] {{Webarchive|url=https://web.archive.org/web/20120611083237/http://tycho.usno.navy.mil/leapsec.html |date=2012-06-11 }}
* [http://www.ucolick.org/~sla/leapsecs/timescales.html A history of astronomical time scales] by Steve Allen
* [http://www.scientificamerican.com/article/experts-time-division-days-hours-minutes/ Why is a minute divided into 60 seconds, an hour into 60 minutes, yet there are only 24 hours in a day] Ask the Experts – March 5, 2021. SCIENTIFIC AMERICAN

{{Time Topics}}
{{Time measurement and standards}}
{{Timezones}}
{{Authority control}}

{{DEFAULTSORT:Time Standard}}
[[Category:Time scales| ]]
[[Category:Timekeeping]]