Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 9 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2022   11:14:09   (   0.06,-137.32) (   0.76,-140.56)  368.51                80
 09/12/2022   10:58:24   (   0.06,-137.32) (  -0.22,-136.09)  140.26                80
 09/13/2022   23:18:09   (  -0.06,-137.31) (  -1.03,-141.49)  476.98                80
 09/14/2022   23:02:25   (  -0.06,-137.31) (   0.03,-137.04)   31.56                80
 09/17/2022   11:03:36   (   0.05,-137.31) (   0.18,-137.95)   72.43                80
 09/18/2022   10:47:51   (   0.05,-137.31) (  -0.81,-133.49)  435.27                80
 09/19/2022   23:07:36   (  -0.04,-137.28) (  -0.41,-138.89)  183.57                80
 09/20/2022   22:51:51   (  -0.04,-137.27) (   0.59,-134.43)  323.82                80
 09/22/2022   11:11:28   (   0.03,-137.27) (   0.63,-139.80)  289.44                80
 09/23/2022   10:55:44   (   0.03,-137.26) (  -0.43,-135.35)  217.73                80