In message:
<ece7a93bd093e1439c20020fbe87c47feb5f69c...@altphyembevsp20.res.ad.jpl>
"Lux, James P" <[email protected]> writes:
: > -----Original Message-----
: > From: [email protected]
: > [mailto:[email protected]] On Behalf Of Jean-Louis Oneto
: > Sent: Wednesday, March 18, 2009 10:14 AM
: > To: Discussion of precise time and frequency measurement
: > Subject: Re: [time-nuts] French Time offset
: >
: > BIPM is an _international_ organisation, and apart to be in
: > France, has nothing to do (and never had as far as I know)
: > with the definition of French legal time. At least no more
: > than for any other country UTC (or TAI) based.
: > Jean-Louis
: > >
: > > Paris is at 2degrees 20 min longitude, which isn't enough
: > to account
: > > for
: > > 12.5 minutes. Sevres (where BIPM is) is actually a bit to
: > the west,
: > > so even less solar time difference.
:
:
: Just casting about for potential meridian locations that might
: explain the 12.5 minute difference. Maybe the central longitude of
: France is 12.5 minutes(of time, 3 1/8th degrees of longitude) from
: Greenwich? (like India's time zone being on the half hour). Things
: get done for funny reasons: After all, the physical size of France
: is why ATM "cells" (packets) are 53 bytes (48 byte payload) instead
: of either 32 byte or 64 byte payloads.
Actually, there this paper:
http://www.ucolick.org/~sla/leapsecs/seago.pdf
says that the delta was 9 minutes and 20 seconds (see page 10)
Historic Universal Time (GMT) in France.
Warner
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