Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 12 9.  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)
 12/14/2017   16:06:45   (  80.71,-109.49) 12/14/2017   16:07:50  (  80.71,-109.49)    0.51                65
 12/14/2017   16:57:43   ( -80.71,  57.77) 12/14/2017   16:58:35  ( -80.71,  57.84)    1.41                52
 12/14/2017   17:48:46   (  80.72,-134.86) 12/14/2017   17:49:20  (  80.71,-134.91)    1.07                34
 12/14/2017   18:39:44   ( -80.72,  32.40) 12/14/2017   18:40:05  ( -80.71,  32.42)    0.89                21
 12/14/2017   19:30:47   (  80.72,-160.24) 12/14/2017   19:30:50  (  80.71,-160.33)    1.85                 3
 12/14/2017   20:21:45   ( -80.72,   7.03) 12/14/2017   20:21:35  ( -80.71,   7.00)    1.12                10
 12/14/2017   21:12:48   (  80.72, 174.39) 12/14/2017   21:12:20  (  80.71, 174.25)    2.67                28
 12/14/2017   22:03:46   ( -80.72, -18.34) 12/14/2017   22:03:05  ( -80.71, -18.42)    1.84                41
 12/14/2017   22:54:50   (  80.72, 148.65) 12/14/2017   22:53:50  (  80.72, 148.83)    3.21                60