Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 10 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2020   10:49:38   (   0.03,-137.19) (   0.94,-141.33)  471.00                80
 10/22/2020   10:33:33   (   0.03,-137.18) (  -0.05,-136.79)   44.44                80
 10/24/2020   22:34:04   (  -0.02,-137.15) (  -0.09,-137.57)   47.43                80
 10/25/2020   22:17:58   (  -0.02,-137.14) (   0.90,-133.03)  467.89                80
 10/27/2020   10:37:06   (   0.02,-137.13) (   0.27,-138.31)  133.95                80
 10/28/2020   10:21:00   (   0.02,-137.12) (  -0.73,-133.77)  381.19                80
 10/29/2020   22:40:15   (  -0.01,-137.09) (  -0.46,-139.07)  226.37                80
 10/30/2020   22:24:10   (  -0.02,-137.07) (   0.53,-134.54)  288.50                80
 11/01/2020   10:43:17   (   0.01,-137.05) (   0.63,-139.81)  314.24                80
 11/02/2020   10:27:12   (   0.01,-137.03) (  -0.36,-135.28)  200.12                80
 11/03/2020   22:46:27   (  -0.01,-136.99) (  -0.82,-140.58)  408.89                80