[LEAPSECS] Conversational caffeine

Gerard Ashton ashtongj at comcast.net
Fri Jan 28 18:37:28 EST 2011

On 1/28/2011 5:47 PM, Rob Seaman wrote (in part):


> Civil time is based on the synodic day. Interval timekeeping requires a different timescale. Pretending one is the other is not a requirement.


> Rob


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Civil time is kept by both ordinary folks and scientists in both
industrialized and developing nations, and the subtle differences in
various nations and the understandings within various groups within
nations have never been put to the test.

The calendar traditionally has been based on the synodic day. Whether
the authority granted to government agencies to disseminate time (e.g.
"The Congress shall have Power To coin Money, regulate the Value
thereof, and of foreign Coin, and fix the Standard of Weights and
Measures") also applies to regulating the calendar has been tested only
in some countries, and at least in the case of France, the government
failed the test. The likelihood of any present governments still
existing by the time this would become an issue is for the reader to
speculate upon.

Interval timing requires two timescales per jurisdiction, one for
computing intervals of civil time (typically used for social, civil, and
legal purposes) and another for measuring SI time (typically used for
physics computations).

Gerry Ashton

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