Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 8 20.  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   (  80.79,  55.50) 08/27/2017   05:01:40  (  80.77,  55.66)    3.09                71
 08/27/2017   05:51:32   ( -80.79,-137.32) 08/27/2017   05:52:26  ( -80.79,-137.36)    1.04                54
 08/27/2017   06:42:31   (  80.78,  29.82) 08/27/2017   06:43:11  (  80.80,  29.92)    2.26                40
 08/27/2017   07:33:33   ( -80.79,-162.63) 08/27/2017   07:33:56  ( -80.79,-162.75)    2.02                23
 08/27/2017   08:24:32   (  80.79,   4.49) 08/27/2017   08:24:41  (  80.80,   4.53)    1.06                 9
 08/27/2017   09:15:35   ( -80.79, 171.69) 08/27/2017   09:15:26  ( -80.79, 171.86)    3.26                 9
 08/27/2017   10:06:33   (  80.79, -20.83) 08/27/2017   10:06:11  (  80.80, -20.87)    0.78                22
 08/27/2017   10:57:36   ( -80.79, 146.37) 08/27/2017   10:56:56  ( -80.80, 146.47)    1.87                40
 08/27/2017   11:48:34   (  80.80, -46.15) 08/27/2017   11:47:41  (  80.80, -46.26)    1.88                53