Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/27/2020   22:14:41   (  -0.04,-137.21) (   0.91,-132.96)  484.36                80
 01/29/2020   10:39:10   (   0.05,-137.21) (   0.28,-138.23)  116.68                80
 01/30/2020   10:17:45   (   0.04,-137.21) (  -0.71,-133.70)  399.25                80
 01/31/2020   22:42:23   (  -0.05,-137.20) (  -0.45,-139.01)  205.91                80
 02/01/2020   22:20:58   (  -0.05,-137.20) (   0.55,-134.48)  309.68                80
 02/03/2020   10:45:26   (   0.06,-137.19) (   0.65,-139.75)  292.52                80
 02/04/2020   10:24:02   (   0.06,-137.18) (  -0.35,-135.22)  222.51                80
 02/05/2020   22:48:39   (  -0.07,-137.16) (  -0.81,-140.53)  384.26                80
 02/06/2020   22:27:15   (  -0.07,-137.14) (   0.19,-136.00)  130.24                80
 02/08/2020   10:51:43   (   0.08,-137.11) (   1.00,-141.27)  473.51                80
 02/09/2020   10:30:19   (   0.07,-137.09) (   0.00,-136.74)   40.50                80