-| created | creation time | datetime | NO | | 0000-00-00 00:00:00 | |
-| edited | last edit time | datetime | NO | | 0000-00-00 00:00:00 | |
-| start | event start time | datetime | NO | | 0000-00-00 00:00:00 | |
-| finish | event end time | datetime | NO | | 0000-00-00 00:00:00 | |
+| created | creation time | datetime | NO | | 0001-01-01 00:00:00 | |
+| edited | last edit time | datetime | NO | | 0001-01-01 00:00:00 | |
+| start | event start time | datetime | NO | | 0001-01-01 00:00:00 | |
+| finish | event end time | datetime | NO | | 0001-01-01 00:00:00 | |