Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 10 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/22/2020   10:33:33   (   0.03,-137.18) (  -0.07,-136.80)   44.56                80
 10/24/2020   22:34:03   (  -0.02,-137.15) (  -0.13,-137.56)   47.49                80
 10/25/2020   22:17:59   (  -0.02,-137.14) (   0.92,-133.04)  467.77                80
 10/27/2020   10:37:05   (   0.02,-137.13) (   0.31,-138.30)  134.04                80
 10/28/2020   10:21:00   (   0.02,-137.12) (  -0.75,-133.78)  381.11                80
 10/29/2020   22:40:16   (  -0.01,-137.09) (  -0.44,-139.08)  226.63                80
 10/30/2020   22:24:10   (  -0.02,-137.07) (   0.55,-134.54)  288.21                80
 11/01/2020   10:43:18   (   0.01,-137.05) (   0.62,-139.81)  314.46                80
 11/02/2020   10:27:12   (   0.02,-137.03) (  -0.38,-135.28)  199.86                80
 11/03/2020   22:46:27   (  -0.01,-136.99) (  -0.81,-140.58)  409.32                80
 11/04/2020   22:30:22   (  -0.01,-136.96) (   0.19,-136.05)  104.42                80