Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 5 10.  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)
 05/14/2018   19:48:10   ( -80.57,  17.14) 05/14/2018   19:49:17  ( -80.55,  17.18)    1.86                67
 05/14/2018   20:39:08   (  80.56,-175.80) 05/14/2018   20:40:03  (  80.58,-175.83)    1.72                55
 05/14/2018   21:30:11   ( -80.57,  -8.30) 05/14/2018   21:30:47  ( -80.56,  -8.23)    2.20                36
 05/14/2018   22:21:09   (  80.56, 158.76) 05/14/2018   22:21:33  (  80.58, 158.77)    1.59                24
 05/14/2018   23:12:12   ( -80.58, -33.73) 05/14/2018   23:12:17  ( -80.56, -33.63)    2.59                 5
 05/15/2018   00:03:10   (  80.57, 133.32) 05/15/2018   00:03:03  (  80.58, 133.36)    1.68                 7
 05/15/2018   00:54:13   ( -80.58, -59.16) 05/15/2018   00:53:47  ( -80.56, -59.04)    3.01                26
 05/15/2018   01:45:11   (  80.57, 107.88) 05/15/2018   01:44:33  (  80.58, 107.95)    1.97                38
 05/15/2018   02:36:14   ( -80.58, -84.60) 05/15/2018   02:35:18  ( -80.59, -84.78)    3.36                56