Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 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)
 12/10/2023   21:11:03   (  -0.00,-104.66) (   0.37,-103.11)  176.97                80
 12/12/2023   09:33:16   (   0.01,-104.69) (   0.88,-108.45)  429.07                80
 12/13/2023   09:12:09   (   0.01,-104.69) (  -0.16,-103.98)   80.80                80
 12/15/2023   21:16:05   (  -0.02,-104.65) (  -0.05,-104.89)   26.61                80
 12/16/2023   21:00:18   (  -0.02,-104.65) (   0.93,-100.41)  483.29                80
 12/18/2023   09:22:32   (   0.01,-104.69) (   0.25,-105.76)  122.83                80
 12/19/2023   09:01:25   (   0.00,-104.69) (  -0.75,-101.29)  387.01                80
 12/20/2023   21:23:48   (  -0.00,-104.65) (  -0.46,-106.67)  229.97                80
 12/21/2023   21:08:00   (  -0.00,-104.66) (   0.54,-102.19)  280.28                80
 12/23/2023   09:30:15   (   0.01,-104.69) (   0.63,-107.55)  324.87                80