On Sat 2015-03-07T02:02:12 +0000, Harlan Stenn hath writ: > When we get a bit more down the road with NTF's General Timestamp API, > I'd appreciate your taking a look at what we're doing and helping out in > any way you are up for. One of the issues that will need more attention > is pre-1972 stuff.
Before 1972 is pretty simple. Without some means of comparing an event with a particular radio broadcast time signal or a particular astronomical event, everything before 1972 is just plain UT or GMT back to 1676, and UT before that. Any subsecond deviations from what those represent (including worries about UT0, UT1, UT2) are only available by painstaking inspection (and re-interpretation into modern terminology) of the tabulations in BIH Bulletin Horaire. Of course I'm ignoring any timezones. That's a whole 'nother layer of painstaking historical investigation for any given locale. -- Steve Allen <[email protected]> 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 _______________________________________________ LEAPSECS mailing list [email protected] https://pairlist6.pair.net/mailman/listinfo/leapsecs
