Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/13/2020   10:24:18   (   0.03,-137.20) (  -0.43,-135.23)  224.34                80
 07/14/2020   22:46:16   (  -0.02,-137.19) (  -0.76,-140.54)  381.07                80
 07/15/2020   22:30:11   (  -0.02,-137.19) (   0.23,-136.00)  134.36                80
 07/17/2020   10:52:00   (   0.01,-137.17) (   0.91,-141.28)  468.10                80
 07/18/2020   10:30:36   (  -0.01,-137.16) (  -0.08,-136.75)   46.57                80
 07/20/2020   22:33:50   (   0.01,-137.12) (  -0.06,-137.53)   46.24                80
 07/21/2020   22:17:45   (   0.01,-137.11) (   0.93,-133.00)  468.21                80
 07/23/2020   10:39:34   (  -0.01,-137.08) (   0.26,-138.27)  135.55                80
 07/24/2020   10:20:49   (  -0.01,-137.06) (  -0.73,-133.73)  378.53                80
 07/25/2020   22:40:06   (   0.01,-137.03) (  -0.45,-139.04)  229.83                80
 07/26/2020   22:24:03   (   0.01,-137.00) (   0.60,-134.52)  283.99                80