Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 9 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/07/2020   22:18:06   (  -0.06,-137.18) (   0.87,-133.02)  474.32                80
 09/09/2020   10:39:54   (   0.06,-137.21) (   0.30,-138.29)  122.87                80
 09/10/2020   10:18:30   (   0.05,-137.23) (  -0.70,-133.76)  395.13                80
 09/11/2020   22:40:27   (  -0.05,-137.24) (  -0.46,-139.06)  207.64                80
 09/12/2020   22:24:22   (  -0.04,-137.26) (   0.55,-134.53)  309.92                80
 09/14/2020   10:46:11   (   0.03,-137.27) (   0.62,-139.80)  288.84                80
 09/15/2020   10:24:47   (   0.03,-137.28) (  -0.44,-135.28)  228.28                80
 09/16/2020   22:46:44   (  -0.02,-137.29) (  -0.77,-140.58)  375.81                80
 09/17/2020   22:30:39   (  -0.03,-137.29) (   0.24,-136.05)  141.21                80
 09/19/2020   10:52:27   (   0.02,-137.30) (   0.94,-141.32)  458.16                80
 09/20/2020   10:31:03   (   0.03,-137.30) (  -0.07,-136.79)   58.44                80