Revision history of "The Nautical Almanac"

This is a list of past revisions of The Nautical Almanac. Each is preserved exactly as it was last seen, which is to say approximately, and not necessarily here. Diffs are unavailable; the two versions could not be brought to the same location at the same time.

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• cur | prev 2026 NotTheMudGeometer (talk | contribs) . . (2,805 bytes) (+45) . . (TWO MEN WHO NEVER MET AGREED ON A NUMBER AND YOU CALL THAT PROOF. THEY AGREED BECAUS THEY WAS BOTH COPYING THE SAME WRONG TABLE) (current)
• cur | prev 2026 an editor (talk | contribs) . . (2,760 bytes) (+200) . . (→ said what the comparer was for. duplicate the work, keep the workers apart, reconcile the answers, treat a disagreement as information. that is 1767, on paper, by post, and it is what every safety-critical system has arrived at since)
• cur | prev 1984 an editor (talk | contribs) . . (2,560 bytes) (+240) . . (→ switched to DE200. no series and no tables: the equations of motion integrated forward step by step for the Sun, the planets, Pluto, the Moon and several hundred asteroids, with the relativistic terms, fitted to radar and to laser ranging off the reflectors on the Moon. those are distances. nothing before this had distances in it)
• cur | prev 1958 an editor (talk | contribs) . . (2,320 bytes) (+110) . . (→ combined with the American ephemeris from the volume for 1960. two nations computing one book, which is the old arrangement at a larger size)
• cur | prev 1948 an editor (talk | contribs) . . (2,210 bytes) (+100) m . . (→ the office has left Greenwich for Herstmonceux, and will go on to Cambridge, to Didcot and to Taunton. a hundred and eighty-one years on the meridian it gave the world, and it now computes from somewhere else)
• cur | prev 1906 an editor (talk | contribs) . . (2,110 bytes) (+150) . . (→ last volume to carry the lunar distances. a hundred and thirty-nine years of it, and the greater part of that after the chronometer was said to have finished the method. worked examples continue to 1919)
• cur | prev 1900 an editor (talk | contribs) . . (1,960 bytes) (+160) . . (→ the planets now come from Newcomb's theories and the Moon from Brown's, which are not tables of what has been seen but solutions of the gravitational problem written out as series. this is worth saying plainly because a series can be wrong where a fitted cycle cannot, and Mercury's perihelion is forty-three seconds a century out and has been since Le Verrier said so in 1859)
• cur | prev 13 October 1884 an editor (talk | contribs) . . (1,800 bytes) (+170) . . (→ Washington has voted longitude to Greenwich, twenty-two to one. no credit is due to us in the resolution and none is claimed, but the tables have been computed for that meridian since 1767 and every navigator in the world already had a copy)
• cur | prev 1855 the Mud Geometer (talk | contribs) . . (1,630 bytes) (+50) . . (HOW CAN A BOOK NO WHERE THE MOON WILL BE NEXT YEER. IT HAS NOT BEEN THEIR YET. THIS IS A BOOK OF GESSING AND YOU HAVE ALL BELEIVED IT)
• cur | prev 1834 an editor (talk | contribs) . . (1,580 bytes) (+90) m . . (→ mean time replaces apparent time in this volume. the Sun is no longer allowed to run fast in November)
• cur | prev 1829 an editor (talk | contribs) . . (1,490 bytes) (+140) . . (→ Dr Young leaves the superintendence after eleven years, in the same year as Mr South's eighty pages. a separate office follows in 1832 and the complaint stops)
• cur | prev 1829 J. South (talk | contribs) . . (1,350 bytes) (+170) . . (→ eighty pages, on the state of this publication under Dr Young. it was once the best in the world and the difference is not in the sky. what is wanted is a new and efficient Board of Longitude, and I have set out the whole of it in the appendix)
• cur | prev 1821 C. Babbage (talk | contribs) . . (1,180 bytes) (+190) . . (→ sat with Herschel over two computations of the same tables and found them disagreeing page after page. I wished aloud that the calculations could be executed by steam. this page is where that came from)
• cur | prev 1809 an editor (talk | contribs) . . (990 bytes) (+80) m . . (→ Hitchins has died, having compared the volumes for forty-two years without a break. Andrews computes still and will do another six)
• cur | prev 1769 M. Hitchins (talk | contribs) . . (910 bytes) (+130) . . (→ comparing, and computing as well this year, Mr Bayly being sent abroad for the transit. the disagreements are the useful part of the work and I keep them)
• cur | prev 1767 N. Maskelyne (talk | contribs) . . (780 bytes) (+200) . . (→ the corrections go in a second book, not this one. refraction, the dip of the horizon, the Sun's parallax, the augmentation of the Moon's semidiameter. this volume is thrown away in December and that one is not, and there is no sense in reprinting a table that has not changed)
• cur | prev 1767 N. Maskelyne (talk | contribs) . . (580 bytes) (+260) . . (→ every figure to be computed twice over by two men working apart, and the two results given to a third to compare. they are not to consult one another. two men who consult make the same error and it is then invisible)
• cur | prev 1766 N. Maskelyne (talk | contribs) . . (320 bytes) (+320) . . (created page; the first volume, for the year 1767. distances of the Moon from the fixed stars at every third hour of Greenwich time, computed forward, so that a ship may find her longitude with a quadrant and a book and no clock at all)

Older revisions exist but have not been located. The page is believed to retain a full history; it is simply not all in one place.