Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 6 23.  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)
 06/25/2018   04:47:15   ( -80.53,-117.08) 06/25/2018   04:48:26  ( -80.53,-117.26)    3.39                71
 06/25/2018   05:38:12   (  80.54,  50.34) 06/25/2018   05:39:11  (  80.52,  50.19)    3.21                59
 06/25/2018   06:29:15   ( -80.53,-142.53) 06/25/2018   06:29:55  ( -80.53,-142.67)    2.60                40
 06/25/2018   07:20:12   (  80.54,  24.89) 06/25/2018   07:20:40  (  80.52,  24.77)    2.61                28
 06/25/2018   08:11:16   ( -80.53,-167.99) 06/25/2018   08:11:25  ( -80.54,-168.08)    1.81                 9
 06/25/2018   09:02:13   (  80.54,  -0.56) 06/25/2018   09:02:10  (  80.53,  -0.64)    2.07                 3
 06/25/2018   09:53:17   ( -80.53, 166.56) 06/25/2018   09:52:55  ( -80.54, 166.51)    1.06                22
 06/25/2018   10:44:14   (  80.54, -26.01) 06/25/2018   10:43:40  (  80.53, -26.05)    1.64                34
 06/25/2018   11:35:18   ( -80.54, 141.11) 06/25/2018   11:34:25  ( -80.54, 141.10)    0.50                53