Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 2 13.  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)
 02/21/2018   05:12:40   ( -80.65,-125.22) 02/21/2018   05:13:41  ( -80.66,-125.36)    2.84                61
 02/21/2018   06:03:38   (  80.65,  42.19) 02/21/2018   06:04:26  (  80.65,  42.02)    2.92                48
 02/21/2018   06:54:41   ( -80.65,-150.62) 02/21/2018   06:55:11  ( -80.66,-150.78)    3.19                30
 02/21/2018   07:45:40   (  80.64,  16.43) 02/21/2018   07:45:56  (  80.66,  16.60)    3.36                16
 02/21/2018   08:36:42   ( -80.65,-176.03) 02/21/2018   08:36:40  ( -80.64,-175.87)    3.05                 2
 02/21/2018   09:27:41   (  80.65,  -8.97) 02/21/2018   09:27:26  (  80.66,  -8.83)    2.87                15
 02/21/2018   10:18:42   ( -80.66, 158.57) 02/21/2018   10:18:09  ( -80.65, 158.70)    2.71                33
 02/21/2018   11:09:41   (  80.65, -34.36) 02/21/2018   11:08:55  (  80.66, -34.26)    2.40                46
 02/21/2018   12:00:43   ( -80.66, 133.16) 02/21/2018   11:59:39  ( -80.65, 133.27)    2.39                64