In one of the pre-1800 links, there's an image of a perpetual calendar. (With an addendum of sunrise/sunset tables and computatation of interest...likely intended for bankers, businessmen, or sea-captains.)
The calendar portion is still useful, by my read...at least for the next 23 years.
(c) 2007 through 2023, inclusive. All rights reserved.
Ego vadum perussi vestri prandium
"I saw to what extent the people among whom I lived could be trusted as good neighbors and friends; that their friendship was for summer weather only; that they did not greatly propose to do right; that they were a distinct race from me by their prejudices and superstitions."
Henry David Thoreau
Blogs: A link here does not constitute an endorsement! Many people have gone nuts in recent years.
1 comment:
In one of the pre-1800 links, there's an image of a perpetual calendar. (With an addendum of sunrise/sunset tables and computatation of interest...likely intended for bankers, businessmen, or sea-captains.)
The calendar portion is still useful, by my read...at least for the next 23 years.
Post a Comment