[LEAPSECS] Leap second mess at NASA

Steve Allen sla at ucolick.org
Thu Jun 2 17:46:47 EDT 2011


On Thu 2011-06-02T21:39:13 +0000, Poul-Henning Kamp hath writ:

> It is a good and instructive example of how leap seconds makes life

> more difficult for programmers.


The CDF document references these

IERS Conventions <http://www.iers.org/nn_11216/IERS/EN/Publications/TechnicalNotes/>

TEMPO 2 reducing pulsar timing observations <http://www.atnf.csiro.au/research/pulsar/ppta/tempo2/>

Much of that math, the 4-transforms, the gravitational potential
expansions, the time ephemeris, the ionization delay, depends on
somebody's estimate of what is, in effect, weather in the universe at
large.

By comparison leap seconds are trivial.

--
Steve Allen <sla at ucolick.org> WGS-84 (GPS)
UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855
1156 High Street Voice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m


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