20180513
  day     Metop-B     23:18:39 - 23:30:07  
          Metop-A   * 00:02:34 - 00:12:28     -225s
          Metop-B     00:57:57 - 01:11:24  
          Metop-A     01:39:42 - 01:50:50  
          NPP         02:05:24 - 02:15:19  
          NPP         03:42:56 - 03:56:50  
          NOAA-19     05:11:29 - 05:24:09  
          NPP         05:27:26 - 05:34:11  
          NOAA-19     06:51:40 - 07:04:58  
          NOAA-18     07:55:39 - 08:01:10  
          NOAA-18     09:30:51 - 09:44:50  
          NOAA-18     11:12:53 - 11:24:37  
  night   Metop-A   x 09:42:18 - 09:49:12        0s
          Metop-B     10:38:05 - 10:50:09  
          Metop-A   * 11:26:07 - 11:31:40     -491s
          Metop-B     12:17:19 - 12:30:35  
          Metop-A     13:00:13 - 13:10:22  
          NPP         16:04:09 - 16:17:56  
          NOAA-19     17:36:42 - 17:47:24  
          NPP       * 17:48:54 - 17:56:16     -220s
          NOAA-19     19:16:05 - 19:30:07  
          NOAA-19     20:59:08 - 21:06:15  
          NOAA-18     21:56:04 - 22:09:01  
          NOAA-18     23:36:34 - 23:49:45