Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 3 6.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/06/2018   22:13:41   (  80.63, 159.59) 03/06/2018   22:14:56  (  80.65, 159.47)    2.98                75
 03/06/2018   23:04:40   ( -80.63, -33.11) 03/06/2018   23:05:40  ( -80.63, -33.01)    1.83                60
 03/06/2018   23:55:42   (  80.63, 134.19) 03/06/2018   23:56:26  (  80.65, 134.08)    2.69                44
 03/07/2018   00:46:41   ( -80.63, -58.52) 03/07/2018   00:47:10  ( -80.63, -58.40)    2.04                29
 03/07/2018   01:37:43   (  80.64, 108.78) 03/07/2018   01:37:56  (  80.65, 108.68)    2.40                13
 03/07/2018   02:28:42   ( -80.64, -83.93) 03/07/2018   02:28:40  ( -80.64, -83.80)    2.29                 2
 03/07/2018   03:19:44   (  80.64,  83.38) 03/07/2018   03:19:26  (  80.65,  83.28)    2.13                18
 03/07/2018   04:10:43   ( -80.64,-109.34) 03/07/2018   04:10:10  ( -80.64,-109.20)    2.56                33
 03/07/2018   05:01:45   (  80.64,  57.97) 03/07/2018   05:00:56  (  80.65,  57.89)    1.87                49