Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 6 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)
 06/19/2017   23:30:11   (  80.83, 137.46) 06/19/2017   23:31:24  (  80.82, 137.37)    2.01                73
 06/20/2017   00:21:12   ( -80.83, -55.54) 06/20/2017   00:22:09  ( -80.83, -55.46)    1.40                57
 06/20/2017   01:12:13   (  80.83, 111.81) 06/20/2017   01:12:54  (  80.82, 111.96)    2.76                41
 06/20/2017   02:03:12   ( -80.83, -80.83) 06/20/2017   02:03:38  ( -80.83, -80.87)    0.72                26
 06/20/2017   02:54:13   (  80.83,  86.52) 06/20/2017   02:54:23  (  80.83,  86.54)    1.08                10
 06/20/2017   03:45:13   ( -80.84,-106.13) 06/20/2017   03:45:08  ( -80.83,-106.28)    2.84                 5
 06/20/2017   04:36:14   (  80.84,  61.23) 06/20/2017   04:35:53  (  80.83,  61.13)    2.19                21
 06/20/2017   05:27:15   ( -80.83,-131.79) 06/20/2017   05:26:38  ( -80.83,-131.70)    1.61                37
 06/20/2017   06:18:16   (  80.84,  35.57) 06/20/2017   06:17:23  (  80.83,  35.72)    2.63                53