Re: [LEAPSECS] Leap-seconds, the epsilon perspective

From: John Cowan <>
Date: Wed, 29 Jan 2003 23:50:01 -0500 (EST)

Mark Calabretta scripsit:

> >Mean solar days don't affect me to speak of.
> We're looking for a solution which will satisfy the broadest spectrum
> of users with the least inconvenience.

I meant "me as random citizen", not "me as me".

> >What for? Why should we (the people of the Earth) care about mean
> >solar days? For some purposes, apparent solar time is important, but
> >most of the time it's civil time that counts. Why should that be tied
> >to mean solar days?
> Would you consider measuring civil time as a non-cyclic count of SI
> seconds, akin to Julian Date?

No, primarily because it's not mnemonic enough, so it doesn't have enough
error correction. But if people can cope with clocks that read 1400
or even 1500 close to solar noon, a maximum drift of 59 minutes from
apparent time to civil time can't be that awful.

John Cowan   <>
"One time I called in to the central system and started working on a big
thick 'sed' and 'awk' heavy duty data bashing script.  One of the geologists
came by, looked over my shoulder and said 'Oh, that happens to me too.
Try hanging up and phoning in again.'"  --Beverly Erlebacher
Received on Wed Jan 29 2003 - 20:50:20 PST

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