[LEAPSECS] 1.26 microseconds

[Poul-Henning Kamp]

In message <96366060-430F-451B-81CC-D63082CD971F at noao.edu>, Rob Seaman writes:


>So "day" is a word referring to Earth Rotation?


As a first order approximation, the same way a year is a first order
approximation to earth orbital position.

Poul-Henning

PS: I read an interesting note recently about how the fact that
years have varying lengths have become an issue for determining the
"official" half-life of long lived radioactive isotopes:  Many
geological methods just counted years, but hadn't considered how
long those years were.

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