20180527
  day     Metop-A     22:32:03 - 22:37:28  
          Metop-B     23:28:35 - 23:40:47  
          Metop-A     00:08:43 - 00:22:32  
          NOAA-18     00:27:16 - 00:37:12  
          Metop-B     01:08:15 - 01:21:25  
          Metop-A     01:49:57 - 02:00:15  
          NPP         02:41:14 - 02:53:48  
          NOAA-19     04:14:06 - 04:20:34  
          NPP       * 04:22:04 - 04:34:07      -61s
          NOAA-19     05:49:57 - 06:03:50  
          NOAA-19     07:32:28 - 07:43:20  
          NOAA-18     08:30:28 - 08:40:58  
          NOAA-18     10:08:35 - 10:22:51  
  night   Metop-A     09:51:19 - 09:59:45  
          Metop-B     10:47:56 - 11:00:32  
          Metop-A     11:27:50 - 11:41:40  
          Metop-B     12:27:46 - 12:40:39  
          Metop-A     13:10:57 - 13:19:48  
          NPP         15:02:48 - 15:13:15  
          NPP         16:41:43 - 16:55:31  
          NOAA-19     18:14:59 - 18:28:21  
          NPP       x 18:24:24 - 18:31:06        0s
          NOAA-19     19:55:43 - 20:08:41  
          NOAA-18     22:33:37 - 22:47:36