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Re: OT: Celestial maps

From:Lars Finsen <lars.finsen@...>
Date:Saturday, January 12, 2008, 20:10
Den 12. jan. 2008 kl. 20.23 skreiv Mark J. Reed:

> Exactly when that year was depends on what you're talking about. We > currently use the Gregorian calendar, and sometimes astronomers extend > it backwards well before its inception in 1582 to refer to past dates. > But usually dates before then are given in the Julian calendar,
Astronomers used to reckon time in Julian days, before and after 1582. Has that changed in later years? LEF

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Mark J. Reed <markjreed@...>