20180510
  day     Metop-B     22:42:50 - 22:49:12  
          Metop-A     23:21:29 - 23:33:40  
          Metop-B     00:19:55 - 00:33:44  
          NOAA-18   x 00:24:17 - 00:34:22        0s
          Metop-A     01:01:10 - 01:14:19  
          Metop-B     02:01:16 - 02:11:13  
          NPP         02:59:29 - 03:12:49  
          NOAA-19     04:09:46 - 04:15:50  
          NPP         04:40:27 - 04:52:31  
          NOAA-19     05:45:23 - 05:59:15  
          NOAA-19     07:27:45 - 07:38:52  
          NOAA-18     08:27:33 - 08:38:02  
          NOAA-18   * 10:12:38 - 10:19:55     -420s
          NOAA-18   x 11:50:40 - 11:57:41        0s
  night   Metop-B     10:02:14 - 10:11:08  
          Metop-A     10:40:50 - 10:53:26  
          Metop-B     11:39:02 - 11:52:52  
          Metop-A     12:20:39 - 12:33:33  
          Metop-B     13:22:31 - 13:30:45  
          NPP         15:20:57 - 15:33:00  
          NPP         17:00:38 - 17:13:59  
          NOAA-19     18:10:28 - 18:23:38  
          NOAA-19     19:51:09 - 20:04:07  
          NOAA-18     22:30:40 - 22:44:44