20180518
  day     Metop-B     23:15:15 - 23:26:27  
          Metop-A     23:55:15 - 00:08:50  
          NOAA-18     00:31:50 - 00:41:13  
          Metop-B     00:54:25 - 01:07:58  
          Metop-A     01:36:02 - 01:47:25  
          NPP         02:11:18 - 02:21:47  
          Metop-B     02:37:43 - 02:42:25  
          NPP         03:49:14 - 04:03:05  
          NOAA-19     04:17:06 - 04:24:23  
          NPP         05:34:37 - 05:39:43  
          NOAA-19     05:53:23 - 06:07:21  
          NOAA-19     07:36:16 - 07:46:39  
          NOAA-18     08:34:30 - 08:45:31  
          NOAA-18     10:12:59 - 10:27:12  
  night   Metop-A     09:39:05 - 09:45:22  
          Metop-B     10:34:43 - 10:46:35  
          Metop-A     11:14:23 - 11:28:04  
          Metop-B     12:13:44 - 12:27:07  
          Metop-A     12:56:24 - 13:06:55  
          NPP         14:33:48 - 14:38:48  
          NPP         16:10:23 - 16:24:15  
          NPP         17:51:41 - 18:02:12  
          NOAA-19     18:18:26 - 18:31:55  
          NOAA-19     19:59:19 - 20:11:59  
          NOAA-18     21:00:31 - 21:06:36  
          NOAA-18     22:37:57 - 22:52:03