Brearley, Harry Chase, 1870-, Ingersoll, Robt. H., & Bro · New York, Pub. by Doubleday, Page & Co. for Robert H. Ingersol & Bros. · leaf 356
alendar of theFrench Revolution (1793) declared to be-gin at midnight on the meridian of theParis Observatory preceding the trueautumnal equinox, September 22, 1792.There were 12 months of 30 days eachand 5 or 6 extra days (as might benecessary) at the end of the year to bringthe new year nearest… … the months with the passing seasons. Themonths are arbitrarily arranged to havealternately 29 days and 30 days. Thelength of the calendar year varies from 353 days to 385 days. Mohammedan—Based on a lunar year of 354 days divided into 12 lunar monthswhich are alternately 29 and 30 days inlength.…
Time measurements · Clocks and watches
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