Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 11 17.  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)
 11/30/2017   23:05:22   ( -80.71, -34.59) 11/30/2017   23:06:38  ( -80.74, -34.66)    3.10                76
 11/30/2017   23:56:27   (  80.72, 132.81) 11/30/2017   23:57:22  (  80.73, 132.90)    1.80                55
 12/01/2017   00:47:22   ( -80.73, -59.59) 12/01/2017   00:48:07  ( -80.72, -59.73)    2.62                45
 12/01/2017   01:38:28   (  80.72, 107.44) 12/01/2017   01:38:52  (  80.73, 107.48)    0.85                24
 12/01/2017   02:29:24   ( -80.72, -85.32) 12/01/2017   02:29:37  ( -80.72, -85.15)    3.08                13
 12/01/2017   03:20:29   (  80.73,  82.08) 12/01/2017   03:20:22  (  80.73,  82.07)    0.19                 7
 12/01/2017   04:11:25   ( -80.73,-110.68) 12/01/2017   04:11:07  ( -80.73,-110.56)    2.13                18
 12/01/2017   05:02:30   (  80.73,  56.71) 12/01/2017   05:01:52  (  80.73,  56.65)    1.10                38
 12/01/2017   05:53:26   ( -80.73,-136.04) 12/01/2017   05:52:37  ( -80.73,-135.98)    1.25                49