Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/25/2020   22:40:07   (  -0.00,-137.19) (  -0.40,-139.05)  211.19                80
 07/26/2020   22:24:03   (  -0.00,-137.19) (   0.59,-134.51)  305.09                80
 07/28/2020   10:45:51   (   0.01,-137.19) (   0.60,-139.78)  295.23                80
 07/29/2020   10:24:28   (   0.01,-137.19) (  -0.45,-135.26)  220.60                80
 07/30/2020   22:46:24   (  -0.01,-137.17) (  -0.80,-140.55)  385.84                80
 07/31/2020   22:30:20   (  -0.01,-137.16) (   0.26,-136.03)  129.62                80
 08/02/2020   10:52:09   (   0.02,-137.16) (   0.93,-141.30)  471.80                80
 08/03/2020   10:30:44   (   0.02,-137.15) (  -0.06,-136.77)   43.35                80
 08/05/2020   22:33:57   (  -0.02,-137.11) (  -0.13,-137.54)   48.87                80
 08/06/2020   22:17:54   (  -0.02,-137.10) (   0.93,-133.02)  466.14                80