Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 7 21.  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)
 07/22/2018   19:54:21   ( -80.49,  16.33) 07/22/2018   19:55:31  ( -80.50,  16.47)    2.62                70
 07/22/2018   20:45:24   (  80.51,-176.02) 07/22/2018   20:46:16  (  80.49,-176.15)    3.01                52
 07/22/2018   21:36:21   ( -80.51,  -8.79) 07/22/2018   21:37:01  ( -80.50,  -8.92)    2.68                40
 07/22/2018   22:27:25   (  80.51, 158.52) 07/22/2018   22:27:46  (  80.49, 158.46)    2.28                21
 07/22/2018   23:18:22   ( -80.51, -34.25) 07/22/2018   23:18:31  ( -80.50, -34.31)    1.57                 9
 07/23/2018   00:09:26   (  80.51, 133.06) 07/23/2018   00:09:16  (  80.49, 133.07)    2.16                10
 07/23/2018   01:00:23   ( -80.51, -59.72) 07/23/2018   01:00:01  ( -80.50, -59.70)    1.26                22
 07/23/2018   01:51:27   (  80.52, 107.60) 07/23/2018   01:50:46  (  80.49, 107.68)    2.74                41
 07/23/2018   02:42:24   ( -80.51, -85.18) 07/23/2018   02:41:31  ( -80.50, -85.09)    2.13                53