[time-nuts] Re: UTC

Tom Van Baak tvb at leapsecond.com
Thu Jul 28 19:28:11 EDT 2005

> Leap seconds are known with about 6 months warning. UTC has been well
defined for over 30 years. Like it or not, "time" is astronomical, both
historically and in actual civil use. ITYM "self-proclaimed timekeepers."

Correct, and that's why, in the very long term,
TAI is not suitable to civil time. And that's also
why UTC, whether implemented with leap
milliseconds, leap seconds, leap minutes,
or leap hours, is suitable to civil time. The key
thing about UTC is the C, the coordination
between atomic and astronomical time. The
UTC leap hour proposal honors that.


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