Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 6 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/26/2019   22:46:45   (   0.00,-137.19) (  -0.75,-140.65)  393.89                80
 06/27/2019   22:30:40   (   0.01,-137.19) (   0.25,-136.12)  122.37                80
 06/29/2019   10:52:29   (  -0.01,-137.20) (   0.93,-141.39)  476.99                80
 06/30/2019   10:31:04   (  -0.01,-137.19) (  -0.08,-136.85)   38.52                80
 07/02/2019   22:34:17   (   0.01,-137.15) (  -0.07,-137.63)   54.74                80
 07/03/2019   22:18:13   (   0.01,-137.13) (   0.93,-133.10)  460.33                80
 07/05/2019   10:40:01   (  -0.01,-137.13) (   0.24,-138.37)  140.67                80
 07/06/2019   10:18:35   (   0.00,-137.11) (  -0.71,-133.83)  373.99                80
 07/07/2019   22:40:33   (  -0.00,-137.06) (  -0.45,-139.14)  235.79                80
 07/08/2019   22:24:28   (  -0.01,-137.05) (   0.56,-134.61)  278.74                80