[CF-metadata] Fwd: Two-variable integer Time in CF? (V. Balaji)

From: Jonathan Gregory <j.m.gregory>
Date: Tue, 6 Nov 2007 08:16:04 +0000

Dear Philip

> an alternative Earth day: the sidereal day (the time it takes for
> the Earth to spin once and face the same stars, as opposed to the sun).
> The difference is about 4 minutes less than a calendar day.

udunits supports this unit as well:

    <day> = <sidereal_day>*0.99727
    <day> = <sidereal_day>/1.00274

I agree, "day" is an important unit. It relates to the calendar, but unlike
"month" and "year", its length is constant (at 86400 s).

Cheers

Jonathan
Received on Tue Nov 06 2007 - 01:16:04 GMT