Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 12 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2023   09:12:09   (   0.00,-104.69) (  -0.14,-103.98)   80.63                80
 12/15/2023   21:16:05   (   0.00,-104.66) (  -0.07,-104.89)   27.02                80
 12/16/2023   21:00:18   (   0.01,-104.66) (   0.97,-100.42)  483.03                80
 12/18/2023   09:22:32   (  -0.01,-104.69) (   0.26,-105.76)  122.96                80
 12/19/2023   09:01:25   (  -0.01,-104.69) (  -0.79,-101.30)  387.13                80
 12/20/2023   21:23:48   (   0.01,-104.66) (  -0.47,-106.67)  229.70                80
 12/21/2023   21:08:01   (   0.01,-104.66) (   0.58,-102.20)  280.56                80
 12/23/2023   09:30:14   (  -0.01,-104.70) (   0.64,-107.54)  324.96                80
 12/24/2023   09:09:08   (  -0.02,-104.70) (  -0.41,-103.08)  185.03                80
 12/25/2023   21:31:30   (   0.02,-104.66) (  -0.84,-108.45)  432.32                80
 12/26/2023   21:15:43   (   0.03,-104.66) (   0.16,-103.98)   77.78                80