[さく, saku] (n) (1) new moon; (2) first day of the lunar month; (3) (in ancient China) next year's calendar and decrees (distributed by the Emperor at year's end)#13687
[ついたち(P);さくじつ(朔日);いっぴ(一日), tsuitachi (P); sakujitsu ( sakujitsu ); ippi ( tsuitachi )] (n) (1) (usu. 一日) first day of the month; (2) (ついたち only) (arch) first ten days of the lunar month; (P)