Computer Formula For The Doomsday of A Year
For computer use, the following formulas for the Doomsday of a year are convenient.
For the Gregorian calendar:
For example, the year 2009 has a doomsday of Saturday under the Gregorian calendar (the currently accepted calendar), since
For the Julian calendar:
The formulas apply also for the proleptic Gregorian calendar and the proleptic Julian calendar. They use the floor function and astronomical year numbering for years BC.
For comparison, see the calculation of a Julian day number.
Read more about this topic: Doomsday Rule
Famous quotes containing the words computer, formula, doomsday and/or year:
“The computer takes up where psychoanalysis left off. It takes the ideas of a decentered self and makes it more concrete by modeling mind as a multiprocessing machine.”
—Sherry Turkle (b. 1948)
“Given for one instant an intelligence which could comprehend all the forces by which nature is animated and the respective positions of the beings which compose it, if moreover this intelligence were vast enough to submit these data to analysis, it would embrace in the same formula both the movements of the largest bodies in the universe and those of the lightest atom; to it nothing would be uncertain, and the future as the past would be present to its eyes.”
—Pierre Simon De Laplace (1749–1827)
“Even an attorney of moderate talent can postpone doomsday year after year, for the system of appeals that pervades American jurisprudence amounts to a legalistic wheel of fortune, a game of chance, somewhat fixed in the favor of the criminal, that the participants play interminably.”
—Truman Capote (1924–1984)
“The author’s conviction on this day of New Year is that music begins to atrophy when it departs too far from the dance; that poetry begins to atrophy when it gets too far from music; but this must not be taken as implying that all good music is dance music or all poetry lyric. Bach and Mozart are never too far from physical movement.”
—Ezra Pound (1885–1972)