Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 3 15.  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)
 03/20/2018   16:56:38   ( -80.62,  59.09) 03/20/2018   16:57:50  ( -80.62,  59.11)    0.56                72
 03/20/2018   17:47:43   (  80.62,-133.71) 03/20/2018   17:48:35  (  80.62,-133.55)    2.87                52
 03/20/2018   18:38:39   ( -80.62,  33.68) 03/20/2018   18:39:20  ( -80.62,  33.71)    0.63                41
 03/20/2018   19:29:44   (  80.62,-159.12) 03/20/2018   19:30:05  (  80.62,-158.95)    3.06                21
 03/20/2018   20:20:40   ( -80.62,   8.26) 03/20/2018   20:20:50  ( -80.62,   8.31)    0.87                10
 03/20/2018   21:11:45   (  80.62, 175.47) 03/20/2018   21:11:35  (  80.62, 175.65)    3.28                10
 03/20/2018   22:02:41   ( -80.63, -17.15) 03/20/2018   22:02:20  ( -80.63, -17.09)    1.19                21
 03/20/2018   22:53:45   (  80.64, 150.41) 03/20/2018   22:53:05  (  80.63, 150.25)    3.43                40
 03/20/2018   23:44:42   ( -80.63, -42.57) 03/20/2018   23:43:50  ( -80.63, -42.48)    1.53                52