Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 11 30.  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, -35.29) 11/30/2017   23:06:38  ( -80.75, -34.93)    9.87                75
 11/30/2017   23:56:26   (  80.72, 132.89) 11/30/2017   23:57:21  (  80.71, 133.06)    3.02                55
 12/01/2017   00:47:21   ( -80.73, -59.58) 12/01/2017   00:48:06  ( -80.72, -59.65)    2.04                45
 12/01/2017   01:38:27   (  80.73, 107.53) 12/01/2017   01:38:51  (  80.72, 107.64)    2.24                24
 12/01/2017   02:29:23   ( -80.72, -85.30) 12/01/2017   02:29:37  ( -80.74, -85.41)    2.68                14
 12/01/2017   03:20:28   (  80.73,  82.16) 12/01/2017   03:20:21  (  80.72,  82.22)    1.64                 7
 12/01/2017   04:11:24   ( -80.73,-110.67) 12/01/2017   04:11:07  ( -80.74,-110.83)    3.30                17
 12/01/2017   05:02:29   (  80.73,  56.80) 12/01/2017   05:01:51  (  80.72,  56.81)    1.46                38
 12/01/2017   05:53:25   ( -80.73,-136.03) 12/01/2017   05:52:36  ( -80.72,-135.90)    2.54                49