20180520
  day     Metop-B     22:36:45 - 22:41:04  
          Metop-A     23:14:29 - 23:26:12  
          NOAA-18   x 00:07:46 - 00:19:16        0s
          Metop-B     00:12:56 - 00:26:42  
          Metop-A     00:53:54 - 01:07:17  
          NPP         01:36:56 - 01:42:16  
          Metop-B     01:54:03 - 02:04:37  
          NPP         03:11:48 - 03:25:27  
          NPP         04:53:35 - 05:04:40  
          NOAA-19     05:30:37 - 05:44:02  
          NOAA-19     07:11:55 - 07:24:16  
          NOAA-18     08:12:46 - 08:21:19  
          NOAA-18     09:49:38 - 09:54:17 *   -576s
          NOAA-18   x 11:32:57 - 11:42:52        0s
  night   Metop-B     09:55:47 - 10:03:48  
          Metop-A     10:33:53 - 10:46:08  
          Metop-B     11:32:03 - 11:45:51  
          Metop-A     12:13:18 - 12:26:28  
          Metop-B     13:14:54 - 13:24:10  
          NPP         15:33:13 - 15:45:59  
          NPP         17:13:19 - 17:26:12  
          NOAA-19     17:55:43 - 18:08:02  
          NOAA-19     19:35:51 - 19:49:30  
          NOAA-18     22:14:47 - 22:28:25