Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2018 1 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)
 02/07/2018   11:20:36   ( -80.66, 142.65) 02/07/2018   11:21:48  ( -80.67, 142.51)    2.64                72
 02/07/2018   12:11:32   (  80.66, -50.21) 02/07/2018   12:12:33  (  80.66, -50.11)    1.95                61
 02/07/2018   13:02:37   ( -80.66, 117.25) 02/07/2018   13:03:18  ( -80.67, 117.08)    3.13                41
 02/07/2018   13:53:33   (  80.66, -75.60) 02/07/2018   13:54:03  (  80.67, -75.53)    1.38                30
 02/07/2018   14:44:38   ( -80.67,  91.86) 02/07/2018   14:44:47  ( -80.65,  92.00)    3.20                 9
 02/07/2018   15:35:34   (  80.66,-101.00) 02/07/2018   15:35:33  (  80.67,-100.96)    0.83                 1
 02/07/2018   16:26:38   ( -80.67,  66.46) 02/07/2018   16:26:16  ( -80.65,  66.57)    2.86                22
 02/07/2018   17:17:34   (  80.67,-126.39) 02/07/2018   17:17:02  (  80.67,-126.39)    0.40                32
 02/07/2018   18:08:40   ( -80.66,  40.71) 02/07/2018   18:07:47  ( -80.68,  40.81)    2.52                53