Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 9 11.  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) (   0.78,-140.55)  368.46                80
 09/12/2022   10:58:24   (   0.07,-137.32) (  -0.21,-136.09)  140.24                80
 09/13/2022   23:18:10   (  -0.06,-137.31) (  -0.98,-141.50)  476.90                80
 09/14/2022   23:02:24   (  -0.06,-137.31) (   0.01,-137.04)   31.50                80
 09/17/2022   11:03:36   (   0.06,-137.31) (   0.20,-137.95)   72.72                80
 09/18/2022   10:47:51   (   0.06,-137.30) (  -0.80,-133.49)  434.91                80
 09/19/2022   23:07:36   (  -0.05,-137.28) (  -0.43,-138.89)  183.85                80
 09/20/2022   22:51:51   (  -0.04,-137.27) (   0.57,-134.43)  323.52                80
 09/22/2022   11:11:29   (   0.03,-137.26) (   0.58,-139.81)  290.01                80
 09/23/2022   10:55:43   (   0.03,-137.25) (  -0.41,-135.35)  217.09                80
 09/24/2022   23:15:29   (  -0.03,-137.22) (  -0.80,-140.75)  402.33                80