Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 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)
 04/10/2020   22:30:11   (   0.03,-137.21) (   0.27,-136.08)  128.22                80
 04/12/2020   10:51:58   (  -0.02,-137.21) (   0.93,-141.35)  472.73                80
 04/13/2020   10:30:34   (  -0.02,-137.20) (  -0.09,-136.82)   43.03                80
 04/15/2020   22:33:46   (   0.02,-137.18) (  -0.09,-137.59)   46.89                80
 04/16/2020   22:17:41   (   0.01,-137.17) (   0.94,-133.06)  468.78                80
 04/18/2020   10:39:29   (  -0.01,-137.16) (   0.26,-138.32)  132.84                80
 04/19/2020   10:18:04   (  -0.01,-137.15) (  -0.76,-133.79)  382.44                80
 04/20/2020   22:40:00   (   0.01,-137.13) (  -0.43,-139.10)  224.05                80
 04/21/2020   22:23:56   (   0.01,-137.12) (   0.59,-134.57)  291.10                80
 04/23/2020   10:45:43   (  -0.01,-137.10) (   0.61,-139.83)  311.24                80
 04/24/2020   10:24:19   (  -0.01,-137.08) (  -0.42,-135.30)  203.28                80