Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 9 12.  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   13:22:00   (  80.64, -72.93) 09/23/2017   13:23:02  (  80.66, -67.79)   92.81                62
 09/23/2017   14:12:57   ( -80.77,  97.71) 09/23/2017   14:13:52  ( -80.77,  97.73)    0.45                55
 09/23/2017   15:03:52   (  80.77, -95.05) 09/23/2017   15:04:37  (  80.77, -94.92)    2.33                45
 09/23/2017   15:54:58   ( -80.77,  72.37) 09/23/2017   15:55:22  ( -80.77,  72.34)    0.89                24
 09/23/2017   16:45:53   (  80.77,-120.38) 09/23/2017   16:46:07  (  80.77,-120.31)    1.45                14
 09/23/2017   17:36:59   ( -80.78,  47.04) 09/23/2017   17:36:52  ( -80.77,  46.94)    2.01                 7
 09/23/2017   18:27:54   (  80.78,-145.71) 09/23/2017   18:27:37  (  80.77,-145.71)    1.24                17
 09/23/2017   19:19:00   ( -80.78,  21.70) 09/23/2017   19:18:22  ( -80.77,  21.55)    3.15                38
 09/23/2017   20:09:56   (  80.77,-171.41) 09/23/2017   20:09:08  (  80.79,-171.45)    1.88                48