History

Time	Change
2012-02-28 22:55:22+00:00	Created
2012-02-28 22:55:22+00:00	Associated with 閏年
2014-05-15 09:29:08+00:00	Associated with leap year
2014-05-15 09:29:08+00:00	Associated with うるう年
2014-05-15 10:39:24+00:00	Associated with 閏年ニ関スル件
2014-05-15 10:39:24+00:00	Associated with 明治三十一年勅令第九十号
2014-05-15 10:39:24+00:00	Associated with 明治三十一年五月十一日勅令第九十号
2020-01-17 02:01:04+00:00	Associated with グレゴリオ閏日
2020-01-17 02:21:51+00:00	Associated with 平年
2020-01-17 02:21:51+00:00	Associated with common year
2020-01-17 02:21:51+00:00	Associated with 共通年
2020-07-20 11:50:43+00:00	Associated with グレゴリオ閏年
2021-03-05 03:40:50+00:00	Associated with グレゴリオ置閏法
2023-04-24 06:15:34+00:00	Associated with 4年