cowan at locke.ccil.org
Wed Oct 7 16:45:48 UTC 1998
Here's another specific reference, from
# Every date recorded in history prior to October 15, 1582 (Gregorian), # such as the coronation of Charlemagne as Holy Roman Emperor on
# Christmas day in the year 800, is a date in the Julian Calendar, since
# on those dates the Gregorian Calendar had not yet been invented.
# We can, however, identify particular days prior to October 15, 1582
# (Gregorian), by means of dates in the Gregorian Calendar simply by
# projecting the Gregorian dating system back beyond the time of its
# implementation. A calendar obtained by extension earlier in time
# than its invention or implementation is called the "proleptic"
# version of the calendar, and thus we obtain the Proleptic Gregorian
# Calendar. The Julian Calendar also can be extended backward as the
# Proleptic Julian Calendar.
# For example, even though the Gregorian Calendar was implemented on
# October 15, 1582 (Gregorian) we can still say that the date of the
# day one year before was October 15, 1581 (Gregorian), even though
# people alive on that day would have said that the date was October 5,
# 1581 (the Julian date at that time). As another example, the date
# of the coronation of Charlemagne, December 25, 800, in the Julian
# Calendar, was December 29, 800, in the Proleptic Gregorian Calendar.
John Cowan http://www.ccil.org/~cowan cowan at ccil.org
You tollerday donsk? N. You tolkatiff scowegian? Nn.
You spigotty anglease? Nnn. You phonio saxo? Nnnn.
Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)
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