Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2020   22:33:40   (  -0.02,-137.18) (  -0.06,-137.51)   36.53                80
 07/05/2020   22:17:36   (  -0.01,-137.18) (   0.93,-132.97)  479.00                80
 07/07/2020   10:39:24   (   0.02,-137.17) (   0.28,-138.24)  122.60                80
 07/08/2020   10:18:00   (   0.02,-137.16) (  -0.77,-133.72)  392.81                80
 07/09/2020   22:39:58   (  -0.03,-137.14) (  -0.42,-139.02)  213.57                80
 07/10/2020   22:23:53   (  -0.03,-137.13) (   0.57,-134.49)  301.69                80
 07/12/2020   10:45:42   (   0.03,-137.12) (   0.63,-139.75)  300.43                80
 07/13/2020   10:24:18   (   0.03,-137.11) (  -0.41,-135.23)  214.36                80
 07/14/2020   22:46:15   (  -0.02,-137.08) (  -0.77,-140.54)  393.38                80
 07/15/2020   22:30:11   (  -0.01,-137.07) (   0.21,-136.00)  120.80                80
 07/17/2020   10:52:00   (  -0.01,-137.04) (   0.93,-141.28)  483.13                80