每日天文第21期 | 每日一图：1911年的土耳其日历

图源 | Dershowitz N, Reingold E M. Calendrical calculations[M]. Cambridge University Press, 2007.

原文参考翻译：1911年的土耳其某日历的一页。最上方是伊斯兰的日期，在它下面是阿拉伯和土耳其的日期；然后下面是俄文的格里高利历日期；在它下面的左边是希腊语的儒略历日期和法语的格里高利历日期——土耳其（某地）的正午时间在左右两边，满月的（希腊语儒略历和法语格里高利历）日期在中间的边缘；在此下面是亚美尼亚语（左）和法语（右）标注的日落时间；最下方是希伯来日期，和用拉迪诺语写出的“星期几”。

原文（来源与图片一致）：Page from a 1911 Turkish calendar. The uppermost portion gives the Islamic date, followed by dates in Arabic and Turkish; below that is the Gregorian date in Russian; below that on the left is the Julian date in Greek and the Gregorian date in French–the time of midday in Turkey is given at the left- and right-hand edges and the date of the full moon is given at the middle edges; below that are entries giving the time of sunset in Armenian on the left and French on the right; below that is the Hebrew date, with the day of the week given in Ladino.