Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 9 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)
 09/23/2017   13:21:58   (  80.67, -72.19) 09/23/2017   13:23:04  (  80.71, -68.55)   65.62                66
 09/23/2017   14:12:57   ( -80.77,  97.69) 09/23/2017   14:13:52  ( -80.77,  97.61)    1.64                55
 09/23/2017   15:03:52   (  80.77, -95.01) 09/23/2017   15:04:37  (  80.77, -94.99)    0.47                45
 09/23/2017   15:54:58   ( -80.77,  72.35) 09/23/2017   15:55:22  ( -80.77,  72.21)    2.56                24
 09/23/2017   16:45:53   (  80.77,-120.35) 09/23/2017   16:46:07  (  80.77,-120.38)    0.75                14
 09/23/2017   17:37:00   ( -80.77,  46.66) 09/23/2017   17:36:52  ( -80.78,  46.82)    3.02                 8
 09/23/2017   18:27:54   (  80.78,-145.68) 09/23/2017   18:27:37  (  80.77,-145.78)    1.95                17
 09/23/2017   19:19:01   ( -80.77,  21.33) 09/23/2017   19:18:22  ( -80.78,  21.42)    1.84                39
 09/23/2017   20:09:55   (  80.78,-171.01) 09/23/2017   20:09:07  (  80.77,-171.17)    3.15                48