Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 6 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/15/2020   10:51:49   (   0.01,-137.18) (   0.91,-141.27)  465.21                80
 06/16/2020   10:30:24   (   0.01,-137.18) (  -0.07,-136.73)   50.94                80
 06/18/2020   22:36:15   (   0.00,-137.16) (  -0.10,-137.49)   38.70                80
 06/19/2020   22:17:30   (   0.01,-137.15) (   0.94,-132.97)  476.83                80
 06/21/2020   10:39:17   (  -0.01,-137.13) (   0.24,-138.23)  125.60                80
 06/22/2020   10:17:53   (  -0.01,-137.12) (  -0.80,-133.71)  389.32                80
 06/23/2020   22:39:48   (   0.01,-137.09) (  -0.41,-139.00)  217.58                80
 06/24/2020   22:23:43   (   0.01,-137.07) (   0.57,-134.46)  297.01                80
 06/26/2020   10:42:50   (  -0.00,-137.04) (   0.61,-139.73)  306.58                80
 06/27/2020   10:26:46   (  -0.00,-137.02) (  -0.44,-135.20)  207.70                80