Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 12 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)
 12/10/2022   23:03:51   (  -0.02,-137.32) (   0.18,-136.48)   95.85                80
 12/13/2022   11:07:58   (   0.00,-137.31) (   0.06,-137.44)   15.71                80
 12/14/2022   10:47:00   (  -0.00,-137.30) (  -0.98,-133.02)  489.27                80
 12/15/2022   23:12:15   (   0.00,-137.28) (  -0.26,-138.45)  133.33                80
 12/16/2022   22:51:15   (   0.01,-137.28) (   0.71,-134.01)  371.39                80
 12/18/2022   11:16:22   (  -0.00,-137.27) (   0.49,-139.42)  245.47                80
 12/19/2022   10:55:22   (  -0.00,-137.25) (  -0.49,-134.98)  258.77                80
 12/20/2022   23:20:38   (  -0.01,-137.22) (  -0.75,-140.42)  365.22                80
 12/21/2022   23:02:18   (  -0.01,-137.20) (   0.24,-135.98)  138.48                80
 12/23/2022   11:24:44   (   0.02,-137.17) (   0.96,-141.38)  480.12                80