Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 6 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/12/2020   22:48:47   (  -0.01,-137.19) (  -0.77,-140.53)  381.46                80
 06/13/2020   22:27:22   (  -0.01,-137.19) (   0.27,-136.00)  135.23                80
 06/15/2020   10:51:49   (   0.01,-137.19) (   0.91,-141.27)  465.00                80
 06/16/2020   10:30:24   (   0.00,-137.18) (  -0.07,-136.73)   51.26                80
 06/18/2020   22:33:35   (   0.00,-137.17) (  -0.10,-137.50)   38.23                80
 06/19/2020   22:17:30   (   0.01,-137.16) (   0.94,-132.97)  477.47                80
 06/21/2020   10:39:18   (  -0.01,-137.14) (   0.24,-138.24)  124.53                80
 06/22/2020   10:17:52   (  -0.01,-137.13) (  -0.75,-133.70)  390.55                80
 06/23/2020   22:39:48   (   0.00,-137.10) (  -0.40,-139.00)  216.37                80
 06/24/2020   22:23:43   (   0.00,-137.08) (   0.58,-134.46)  298.33                80
 06/26/2020   10:45:30   (  -0.00,-137.05) (   0.60,-139.73)  304.90                80