Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 8 16.  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   05:00:29   (  80.78,  55.37) 08/27/2017   05:01:41  (  80.80,  55.29)    1.94                72
 08/27/2017   05:51:32   ( -80.78,-137.43) 08/27/2017   05:52:26  ( -80.79,-137.35)    1.67                54
 08/27/2017   06:42:30   (  80.79,  30.05) 08/27/2017   06:43:11  (  80.80,  29.90)    2.78                41
 08/27/2017   07:33:33   ( -80.79,-162.74) 08/27/2017   07:33:56  ( -80.79,-162.74)    0.54                23
 08/27/2017   08:24:32   (  80.78,   4.36) 08/27/2017   08:24:41  (  80.80,   4.51)    2.99                 9
 08/27/2017   09:15:34   ( -80.79, 171.94) 08/27/2017   09:15:26  ( -80.79, 171.87)    1.25                 8
 08/27/2017   10:06:33   (  80.79, -20.97) 08/27/2017   10:06:11  (  80.80, -20.88)    1.72                22
 08/27/2017   10:57:35   ( -80.80, 146.62) 08/27/2017   10:56:56  ( -80.80, 146.48)    2.57                39
 08/27/2017   11:48:34   (  80.79, -46.29) 08/27/2017   11:47:41  (  80.80, -46.27)    0.50                53