Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2017 7 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)
 07/30/2017   20:38:56   (  80.81,-179.42) 07/30/2017   20:39:56  (  80.81,-179.54)    2.26                60
 07/30/2017   21:29:53   ( -80.80, -12.32) 07/30/2017   21:30:41  ( -80.80, -12.14)    3.20                48
 07/30/2017   22:20:58   (  80.80, 154.91) 07/30/2017   22:21:26  (  80.81, 155.04)    2.63                28
 07/30/2017   23:11:54   ( -80.81, -37.62) 07/30/2017   23:12:11  ( -80.81, -37.56)    1.20                17
 07/31/2017   00:02:59   (  80.81, 129.60) 07/31/2017   00:02:56  (  80.81, 129.62)    0.94                 3
 07/31/2017   00:53:55   ( -80.81, -62.93) 07/31/2017   00:53:41  ( -80.81, -62.97)    0.85                14
 07/31/2017   01:45:00   (  80.81, 104.29) 07/31/2017   01:44:26  (  80.82, 104.20)    1.64                34
 07/31/2017   02:35:56   ( -80.82, -88.24) 07/31/2017   02:35:11  ( -80.81, -88.39)    2.84                45
 07/31/2017   03:27:02   (  80.81,  78.61) 07/31/2017   03:25:56  (  80.82,  78.78)    3.27                66