A Synchronic Chinese-Western Daily Calendar: 1341–1661 A.D. is a calendar conversion table generated by computer, published in 1984. It allows the conversion of dates in the Chinese calendars used during the Ming dynasty (1368–1644) into the Julian calendar (before 1582) and the Gregorian calendar (after 1582). A Synchronic Chinese-Western Daily Calendar can also be described as a concordance ().

Structure A Synchronic Chinese-Western Daily Calendar uses the Ming calendar from 1341–1643 and the Qing calendar from 1644–1661. In the Ming era, it is based on the Da Tong Shu, while in the Qing era it is based on the Shi Xian Shu. It covers not only the entire Ming dynasty, but also the insurrections in the late Yuan which led to the founding of the Ming and the gradual collapse of the Southern Ming rump states. However, it does not cover 1662–1683, when the Zheng dynasty continued to use the Ming calendar on Taiwan.

Earlier concordances, like the Jinshi Zhongxishi Ri Duizhao Biao and A Sino-Western Calendar For Two Thousand Years 1-2000 A. D., have limitations that make them slightly inconvenient. The former only begins in 1516, while the latter does not include sexegenary day names, which must be derived by a "simple calculation". These challenges led to A Synchronic Chinese-Western Daily Calendar being based on Chung-kuo nien-li tsung-p'u (), published in 1960 by Dong Zuobin, though it also corrects small errors in Dong's work. Dong gave the sexagenary date and Western date for the first day of each month, which Keith Hazelton was able to "flesh out" using a computer to cover every day of the calendar.

Every page of the book corresponds to one civil year. Each day is denoted by the number of its lunar month (with intercalary months denoted by a '+' sign and the number of the preceding month), the sexagenary sign of the day, the number of the day in the month, and the corresponding Julian or Gregorian year, month, and day.

Reception Used to convert all dates in volumes 7 and 8 of The Cambridge History of China, work was supported by Frederick W. Mote, James Geiss, and Denis Twitchett; Twitchett helped secure funding for it, including a grant from the National Endowment for the Humanities to the Cambridge History of China Project. Publication costs were covered by the Association for Asian Studies.

Stephen H. West described A Synchronic Chinese-Western Daily Calendar was described as "a precise and accurate Sino-Western calendar" and "easy to use". The first (1984) edition of A Synchronic Chinese-Western Daily Calendar contained some printing errors, resolved in the revised edition of 1985.

Heinrich Busch, a sinologist at the Society of the Divine Word at Sankt Augustin, wrote that A Synchronic Chinese-Western Daily Calendar "reflects the growing specialization in historical studies on China, the demand for ever more convenient working tools, and the aid the computer is able to provide in developing these tools".

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