orbit epoch 00:18 00:18 02:15 02:15 04:12 04:12 06:09 06:09 08:06 08:06 10:04 10:04 12:01 12:01 13:58 13:58 15:55 15:55 17:52 17:52 19:50 19:50 21:47 21:47 23:44 23:44