History

Time	Change
2016-04-06 09:10:29+00:00	Created
2016-04-06 09:10:29+00:00	Associated with 時差の表
2016-10-26 15:26:52+00:00	Associated with 時間帯図
2017-01-15 10:55:24+00:00	Associated with 時差表
2017-07-26 14:16:52+00:00	Associated with 時刻帯図
2021-08-31 07:41:38+00:00	Associated with The Geographical Journal, for February 1899.