Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 9 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/01/2022   11:01:02   (   0.08,-137.31) (  -0.00,-136.83)   54.49                80
 09/03/2022   23:02:24   (  -0.07,-137.28) (  -0.18,-137.78)   57.00                80
 09/04/2022   22:46:39   (  -0.07,-137.27) (   0.80,-133.32)  449.87                80
 09/06/2022   11:06:16   (   0.06,-137.25) (   0.39,-138.69)  164.59                80
 09/07/2022   10:50:31   (   0.06,-137.23) (  -0.59,-134.23)  341.88                80
 09/08/2022   23:10:17   (  -0.05,-137.20) (  -0.62,-139.64)  278.22                80
 09/09/2022   22:54:32   (  -0.05,-137.18) (   0.43,-135.19)  228.34                80
 09/11/2022   11:14:09   (   0.04,-137.16) (   0.83,-140.55)  386.40                80
 09/12/2022   10:58:24   (   0.04,-137.15) (  -0.21,-136.10)  120.06                80
 09/14/2022   22:59:44   (  -0.04,-137.09) (  -0.05,-137.03)    6.33                80