Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/01/2020   22:23:50   (  -0.01,-137.23) (   0.62,-134.51)  309.92                80
 12/03/2020   10:42:56   (   0.00,-137.22) (   0.57,-139.78)  291.15                80
 12/04/2020   10:26:51   (   0.01,-137.21) (  -0.44,-135.24)  224.52                80
 12/05/2020   22:46:06   (  -0.00,-137.19) (  -0.74,-140.55)  382.04                80
 12/06/2020   22:30:01   (  -0.00,-137.18) (   0.27,-136.01)  133.34                80
 12/08/2020   10:49:07   (   0.00,-137.16) (   0.91,-141.28)  468.67                80
 12/09/2020   10:33:02   (   0.00,-137.15) (  -0.10,-136.74)   46.36                80
 12/11/2020   22:33:30   (  -0.00,-137.10) (  -0.12,-137.50)   46.72                80
 12/12/2020   22:17:25   (  -0.01,-137.07) (   0.89,-132.97)  467.81                80
 12/14/2020   10:39:11   (   0.00,-137.04) (   0.28,-138.23)  135.73                80
 12/15/2020   10:17:46   (   0.00,-137.02) (  -0.73,-133.70)  378.08                80