History

Time	Change
2014-05-06 06:57:01+00:00	Created
2014-05-06 06:57:01+00:00	Associated with number of days in month month of year year
2014-05-06 06:57:01+00:00	Associated with 日の数
2014-05-06 06:58:37+00:00	Associated with number of days
2020-01-16 13:05:03+00:00	Associated with 月の日の数