History

Time	Change
2017-11-26 15:38:10+00:00	Created
2017-11-26 15:38:10+00:00	Associated with 中央觀象台
2017-11-26 15:38:45+00:00	Associated with 北京古觀象台
2018-09-17 13:36:36+00:00	Associated with 中央観象台
2018-09-17 13:36:36+00:00	Associated with 北京觀象台
2018-09-17 13:36:36+00:00	Associated with 北京観象台
2019-03-13 07:36:54+00:00	Associated with 北京古観象台