Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2020   10:45:42   (   0.03,-137.20) (   0.61,-139.76)  291.67                80
 07/13/2020   10:24:18   (   0.03,-137.20) (  -0.44,-135.24)  224.20                80
 07/14/2020   22:46:16   (  -0.02,-137.19) (  -0.75,-140.54)  381.43                80
 07/15/2020   22:30:11   (  -0.02,-137.18) (   0.24,-136.01)  133.94                80
 07/17/2020   10:52:01   (   0.00,-137.17) (   0.90,-141.29)  468.44                80
 07/18/2020   10:30:36   (  -0.01,-137.16) (  -0.09,-136.75)   46.18                80
 07/20/2020   22:33:49   (   0.01,-137.12) (  -0.10,-137.52)   46.83                80
 07/21/2020   22:17:45   (   0.01,-137.10) (   0.95,-133.00)  467.61                80
 07/23/2020   10:39:34   (  -0.01,-137.07) (   0.25,-138.27)  136.08                80
 07/24/2020   10:18:09   (  -0.01,-137.05) (  -0.75,-133.74)  377.94                80