Brearley, Harry Chase, 1870-, Ingersoll, Robt. H., & Bro · New York, Pub. by Doubleday, Page & Co. for Robert H. Ingersol & Bros. · leaf 356
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. During each period of 30 years atotal of 11 days are added one at… … CALENDAR CLOCK
Time measurements · Clocks and watches
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
