20180511
  day     Metop-A     23:01:23 - 23:11:56  
          Metop-B     23:59:19 - 00:12:49  
          NOAA-18   * 00:14:19 - 00:23:23     -123s
          Metop-A     00:40:15 - 00:53:56  
          Metop-B     01:39:59 - 01:51:36  
          Metop-A     02:22:58 - 02:29:13  
          NPP         02:41:13 - 02:53:47  
          NPP         04:21:02 - 04:34:06  
          NOAA-19     05:34:00 - 05:47:35  
          NOAA-19     07:15:36 - 07:27:39  
          NOAA-18     08:16:40 - 08:25:56  
          NOAA-18     09:53:58 - 10:08:15  
          NOAA-18     11:37:47 - 11:46:55  
  night   Metop-B     09:43:30 - 09:49:10  
          Metop-A     10:20:54 - 10:32:18  
          Metop-B     11:18:28 - 11:32:05  
          Metop-A     11:59:29 - 12:13:04  
          Metop-B     13:00:16 - 13:11:05  
          NPP         15:02:47 - 15:13:15  
          NPP         16:41:43 - 16:55:29  
          NOAA-19     17:59:08 - 18:11:41  
          NPP         18:24:24 - 18:31:04  
          NOAA-19     19:39:25 - 19:52:51  
          NOAA-18     22:19:05 - 22:32:55