Next message: Frank Reed: "Re: The Online Nautical Almanac- beware!"
John wrote:
"Do any of these online almanacs take into consideration the switch from the
julian calendar to the gregorian calendar? The date of the switch varies from
one geopolitical region to another..."
Mine doesn't. As you say, with so many geopolitical variations, it would be a
nuisance to include automatically (though it could be done easily as a
user-selected option). Some astronomical software does the calendar change in 1583,
which is when the new calendar was first introduced in Catholic countries in
Europe. My first almanac software way back in 1979 did this (if I remember
correctly, it was base on the julian date calculation in the Explanatory
Supplement to the AE&NA). But I don't bother anymore.
Frank R
[ ] Mystic, Connecticut
[X] Chicago, Illinois
