Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 6 14.  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)
 06/19/2017   23:30:11   (  80.83, 137.19) 06/19/2017   23:31:24  (  80.83, 137.11)    1.72                73
 06/20/2017   00:21:11   ( -80.83, -55.42) 06/20/2017   00:22:08  ( -80.82, -55.34)    1.62                57
 06/20/2017   01:12:12   (  80.83, 111.90) 06/20/2017   01:12:53  (  80.82, 112.05)    3.07                41
 06/20/2017   02:03:12   ( -80.83, -80.72) 06/20/2017   02:03:38  ( -80.82, -80.75)    1.29                26
 06/20/2017   02:54:14   (  80.83,  86.25) 06/20/2017   02:54:24  (  80.84,  86.28)    1.50                10
 06/20/2017   03:45:14   ( -80.83,-106.38) 06/20/2017   03:45:09  ( -80.84,-106.52)    2.99                 5
 06/20/2017   04:36:15   (  80.83,  60.96) 06/20/2017   04:35:54  (  80.84,  60.87)    1.78                21
 06/20/2017   05:27:15   ( -80.84,-131.67) 06/20/2017   05:26:38  ( -80.83,-131.58)    1.84                37
 06/20/2017   06:18:16   (  80.84,  35.67) 06/20/2017   06:17:23  (  80.82,  35.81)    2.98                53