Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 9 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/17/2020   22:30:39   (  -0.04,-137.19) (   0.24,-136.05)  131.01                80
 09/19/2020   10:49:48   (   0.03,-137.19) (   0.93,-141.32)  469.84                80
 09/20/2020   10:33:43   (   0.04,-137.18) (  -0.07,-136.78)   46.11                80
 09/22/2020   22:34:15   (  -0.03,-137.16) (  -0.13,-137.55)   44.44                80
 09/23/2020   22:18:11   (  -0.03,-137.15) (   0.88,-133.02)  470.74                80
 09/25/2020   10:37:19   (   0.03,-137.13) (   0.29,-138.29)  131.84                80
 09/26/2020   10:21:14   (   0.02,-137.12) (  -0.71,-133.76)  383.01                80
 09/27/2020   22:40:32   (  -0.01,-137.10) (  -0.43,-139.07)  224.16                80
 09/28/2020   22:24:27   (  -0.01,-137.08) (   0.58,-134.54)  290.68                80
 09/30/2020   10:43:36   (   0.01,-137.06) (   0.59,-139.81)  312.25                80
 10/01/2020   10:27:31   (   0.01,-137.04) (  -0.42,-135.27)  202.47                80