20180525
  day     Metop-A   x 23:10:59 - 23:22:27        0s
          Metop-B     00:09:27 - 00:23:10  
          Metop-A   x 00:50:17 - 01:03:45        0s
          NOAA-18     00:51:44 - 00:58:36  
          NPP         01:42:27 - 01:48:56 *     -6s
          Metop-B     01:50:26 - 02:01:19  
          NPP         03:17:59 - 03:31:46  
          NOAA-19     04:35:14 - 04:44:55  
          NPP         05:00:12 - 05:10:42  
          NOAA-19     06:12:58 - 06:27:02  
          NOAA-19     07:57:28 - 08:05:12  
          NOAA-18     08:52:37 - 09:04:55  
          NOAA-18     10:32:11 - 10:46:02  
  night   Metop-B     09:52:36 - 10:00:06  
          Metop-A   x 10:30:25 - 10:42:29        0s
          Metop-B     11:28:34 - 11:42:20  
          Metop-A     12:09:38 - 12:22:55  
          Metop-B     13:11:08 - 13:20:51  
          NPP         15:39:23 - 15:52:26  
          NPP         17:19:41 - 17:32:17  
          NOAA-19     18:37:53 - 18:51:56  
          NOAA-19     20:19:20 - 20:30:54  
          NOAA-18     21:18:05 - 21:27:27  
          NOAA-18     22:56:55 - 23:11:00