20180515
  day     Metop-B     22:39:44 - 22:45:11  
          Metop-A     23:17:59 - 23:23:16 *   -401s
          Metop-B     00:16:25 - 00:30:13  
          Metop-A     00:57:32 - 01:10:48  
          Metop-B     01:57:39 - 02:07:55  
          NPP         03:05:38 - 03:19:09  
          NPP       x 04:47:00 - 04:58:36        0s
          NOAA-19     04:49:20 - 05:00:30  
          NOAA-19     06:28:07 - 06:42:03  
          NOAA-18     09:08:02 - 09:21:15  
          NOAA-18     10:48:37 - 11:01:51  
  night   Metop-B     09:59:00 - 10:07:28  
          Metop-A     10:37:21 - 10:47:07 *   -160s
          Metop-B     11:35:32 - 11:49:22  
          Metop-A     12:16:58 - 12:30:01  
          Metop-B     13:18:42 - 13:27:28  
          NPP         15:27:05 - 15:39:30  
          NPP         17:06:58 - 17:13:26 *   -400s
          NOAA-19     17:14:56 - 17:22:17  
          NOAA-19     18:52:54 - 19:07:04  
          NOAA-19     20:34:54 - 20:45:00  
          NOAA-18     21:33:20 - 21:44:40  
          NOAA-18     23:13:01 - 23:26:54