Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 10 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)
 10/20/2017   21:43:07   (  80.70, 164.10) 10/20/2017   21:44:19  (  80.77, 165.51)   26.78                72
 10/20/2017   22:34:04   ( -80.75, -26.99) 10/20/2017   22:35:03  ( -80.76, -26.95)    0.96                59
 10/20/2017   23:25:03   (  80.76, 140.55) 10/20/2017   23:25:48  (  80.76, 140.45)    1.91                45
 10/21/2017   00:16:05   ( -80.76, -52.34) 10/21/2017   00:16:33  ( -80.76, -52.36)    0.50                28
 10/21/2017   01:07:04   (  80.77, 115.20) 10/21/2017   01:07:18  (  80.76, 115.04)    3.13                14
 10/21/2017   01:58:06   ( -80.76, -77.69) 10/21/2017   01:58:03  ( -80.76, -77.77)    1.45                 3
 10/21/2017   02:49:06   (  80.76,  89.50) 10/21/2017   02:48:48  (  80.76,  89.63)    2.39                18
 10/21/2017   03:40:07   ( -80.77,-103.04) 10/21/2017   03:39:33  ( -80.77,-103.18)    2.54                34
 10/21/2017   04:31:07   (  80.77,  64.15) 10/21/2017   04:30:18  (  80.76,  64.22)    1.33                49