Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 5 8.  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,  17.03) 05/14/2018   19:49:17  ( -80.56,  17.06)    0.59                67
 05/14/2018   20:39:07   (  80.57,-175.58) 05/14/2018   20:40:02  (  80.56,-175.63)    1.33                55
 05/14/2018   21:30:11   ( -80.57,  -8.41) 05/14/2018   21:30:47  ( -80.57,  -8.35)    1.10                36
 05/14/2018   22:21:08   (  80.57, 158.98) 05/14/2018   22:21:32  (  80.57, 158.97)    1.07                24
 05/14/2018   23:12:12   ( -80.57, -33.84) 05/14/2018   23:12:17  ( -80.57, -33.76)    1.60                 5
 05/15/2018   00:03:09   (  80.58, 133.55) 05/15/2018   00:03:02  (  80.57, 133.56)    1.11                 7
 05/15/2018   00:54:13   ( -80.57, -59.27) 05/15/2018   00:53:47  ( -80.57, -59.16)    2.11                26
 05/15/2018   01:45:10   (  80.58, 108.11) 05/15/2018   01:44:32  (  80.57, 108.15)    1.42                38
 05/15/2018   02:36:14   ( -80.58, -84.71) 05/15/2018   02:35:17  ( -80.57, -84.57)    2.61                57