Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 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)
 08/26/2020   22:43:02   (  -0.04,-137.19) (  -0.44,-139.06)  212.92                80
 08/27/2020   22:24:17   (  -0.03,-137.20) (   0.55,-134.53)  303.83                80
 08/29/2020   10:43:25   (   0.03,-137.21) (   0.62,-139.80)  295.45                80
 08/30/2020   10:27:22   (   0.01,-137.21) (  -0.44,-135.28)  220.83                80
 08/31/2020   22:46:39   (   0.00,-137.21) (  -0.73,-140.59)  384.78                80
 09/01/2020   22:30:35   (   0.00,-137.21) (   0.27,-136.06)  131.73                80
 09/03/2020   10:49:43   (  -0.00,-137.22) (   0.90,-141.33)  467.80                80
 09/04/2020   10:33:39   (  -0.00,-137.22) (  -0.10,-136.79)   48.52                80
 09/06/2020   22:34:11   (  -0.00,-137.20) (  -0.06,-137.57)   41.37                80
 09/07/2020   22:18:07   (  -0.00,-137.20) (   0.94,-133.04)  474.43                80