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

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/10/2020   10:18:30   (   0.05,-137.19) (  -0.72,-133.76)  390.98                80
 09/11/2020   22:40:27   (  -0.05,-137.19) (  -0.44,-139.07)  213.31                80
 09/12/2020   22:24:23   (  -0.04,-137.19) (   0.56,-134.54)  303.10                80
 09/14/2020   10:43:31   (   0.04,-137.19) (   0.61,-139.81)  297.73                80
 09/15/2020   10:27:27   (   0.03,-137.19) (  -0.40,-135.27)  218.23                80
 09/16/2020   22:46:44   (  -0.03,-137.18) (  -0.76,-140.58)  387.28                80
 09/17/2020   22:30:39   (  -0.03,-137.17) (   0.25,-136.05)  128.59                80
 09/19/2020   10:49:48   (   0.02,-137.17) (   0.93,-141.32)  472.96                80
 09/20/2020   10:33:43   (   0.03,-137.16) (  -0.08,-136.79)   42.56                80
 09/22/2020   22:34:15   (  -0.03,-137.12) (  -0.12,-137.55)   49.19                80