Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/10/2020   22:40:14   (  -0.03,-137.17) (  -0.48,-139.05)  214.29                80
 08/11/2020   22:24:11   (  -0.03,-137.18) (   0.58,-134.53)  302.69                80
 08/13/2020   10:45:59   (   0.02,-137.19) (   0.60,-139.80)  297.22                80
 08/14/2020   10:24:35   (   0.01,-137.19) (  -0.40,-135.26)  219.00                80
 08/15/2020   22:46:33   (   0.02,-137.18) (  -0.73,-140.58)  386.74                80
 08/16/2020   22:30:28   (   0.01,-137.18) (   0.27,-136.05)  129.34                80
 08/18/2020   10:52:17   (  -0.01,-137.18) (   0.90,-141.32)  471.77                80
 08/19/2020   10:30:52   (  -0.00,-137.17) (  -0.09,-136.79)   43.85                80
 08/21/2020   22:34:05   (   0.00,-137.15) (  -0.08,-137.56)   46.91                80
 08/22/2020   22:18:01   (   0.00,-137.14) (   0.92,-133.03)  468.32                80
 08/24/2020   10:39:49   (  -0.00,-137.12) (   0.26,-138.30)  134.08                80