Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 12 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/15/2023   21:16:05   (   0.01,-104.66) (  -0.05,-104.89)   26.78                80
 12/16/2023   21:00:19   (   0.01,-104.66) (   0.99,-100.43)  483.19                80
 12/18/2023   09:22:32   (  -0.01,-104.69) (   0.24,-105.76)  122.72                80
 12/19/2023   09:01:25   (  -0.01,-104.69) (  -0.75,-101.29)  387.40                80
 12/20/2023   21:23:48   (   0.01,-104.66) (  -0.45,-106.67)  229.32                80
 12/21/2023   21:08:00   (   0.01,-104.66) (   0.54,-102.19)  280.99                80
 12/23/2023   09:30:15   (  -0.02,-104.70) (   0.62,-107.55)  324.48                80
 12/24/2023   09:09:07   (  -0.02,-104.70) (  -0.37,-103.07)  185.55                80
 12/25/2023   21:31:31   (   0.03,-104.67) (  -0.82,-108.46)  431.69                80
 12/26/2023   21:15:43   (   0.03,-104.67) (   0.18,-103.98)   78.43                80