Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 11 18.  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)
 11/30/2017   23:05:23   ( -80.69, -35.23) 11/30/2017   23:06:38  ( -80.75, -34.87)    9.40                75
 11/30/2017   23:56:26   (  80.72, 132.88) 11/30/2017   23:57:21  (  80.72, 133.04)    2.87                55
 12/01/2017   00:47:22   ( -80.72, -59.88) 12/01/2017   00:48:07  ( -80.73, -59.95)    1.85                45
 12/01/2017   01:38:27   (  80.73, 107.51) 12/01/2017   01:38:51  (  80.72, 107.62)    2.06                24
 12/01/2017   02:29:23   ( -80.73, -85.25) 12/01/2017   02:29:37  ( -80.74, -85.36)    2.38                14
 12/01/2017   03:20:28   (  80.73,  82.15) 12/01/2017   03:20:21  (  80.72,  82.20)    1.44                 7
 12/01/2017   04:11:24   ( -80.73,-110.61) 12/01/2017   04:11:07  ( -80.74,-110.78)    3.14                17
 12/01/2017   05:02:29   (  80.74,  56.78) 12/01/2017   05:01:51  (  80.72,  56.78)    1.29                38
 12/01/2017   05:53:25   ( -80.74,-135.98) 12/01/2017   05:52:36  ( -80.72,-135.85)    2.74                49