Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 8 15.  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)
 08/27/2017   05:00:28   (  80.79,  55.69) 08/27/2017   05:01:40  (  80.78,  55.53)    3.11                72
 08/27/2017   05:51:31   ( -80.79,-137.10) 08/27/2017   05:52:25  ( -80.78,-137.10)    1.55                54
 08/27/2017   06:42:30   (  80.79,  30.00) 08/27/2017   06:43:10  (  80.78,  30.14)    2.57                40
 08/27/2017   07:33:33   ( -80.79,-162.78) 08/27/2017   07:33:56  ( -80.80,-162.84)    1.66                23
 08/27/2017   08:24:31   (  80.79,   4.68) 08/27/2017   08:24:40  (  80.78,   4.75)    1.71                 9
 08/27/2017   09:15:34   ( -80.79, 171.90) 08/27/2017   09:15:26  ( -80.80, 171.77)    2.47                 8
 08/27/2017   10:06:32   (  80.80, -20.64) 08/27/2017   10:06:10  (  80.78, -20.64)    1.62                22
 08/27/2017   10:57:36   ( -80.79, 146.22) 08/27/2017   10:56:56  ( -80.80, 146.38)    3.13                40
 08/27/2017   11:48:34   (  80.79, -46.33) 08/27/2017   11:47:41  (  80.80, -46.38)    1.50                53