Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2020 9 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/08/2020   22:47:44   (  -0.06,-137.18) (  -0.51,-139.30)  241.97                80
 09/09/2020   22:31:28   (  -0.05,-137.18) (   0.51,-134.72)  280.72                80
 09/11/2020   10:52:57   (   0.05,-137.19) (   0.69,-139.90)  310.30                80
 09/12/2020   10:31:22   (   0.05,-137.19) (  -0.39,-135.34)  211.78                80
 09/13/2020   22:53:00   (  -0.04,-137.18) (  -0.77,-140.56)  384.75                80
 09/14/2020   22:36:43   (  -0.03,-137.18) (   0.25,-135.98)  136.92                80
 09/16/2020   10:55:33   (   0.02,-137.18) (   0.94,-141.17)  455.27                80
 09/17/2020   10:39:17   (   0.02,-137.17) (  -0.13,-136.60)   66.23                80
 09/19/2020   22:39:18   (  -0.03,-137.15) (  -0.07,-137.23)   10.58                80