Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 9 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/08/2023   21:22:22   (   0.01,-104.68) (  -0.72,-107.94)  371.40                80
 09/09/2023   21:06:38   (   0.01,-104.68) (   0.26,-103.48)  137.03                80
 09/11/2023   09:28:56   (  -0.00,-104.71) (   0.95,-108.84)  471.89                80
 09/12/2023   09:07:53   (  -0.00,-104.71) (  -0.09,-104.39)   36.49                80
 09/14/2023   21:11:56   (  -0.00,-104.69) (  -0.13,-105.34)   73.82                80
 09/15/2023   20:56:12   (  -0.00,-104.69) (   0.86,-100.88)  435.03                80
 09/17/2023   09:18:30   (   0.00,-104.72) (   0.35,-106.24)  173.30                80
 09/18/2023   08:57:26   (   0.00,-104.72) (  -0.64,-101.78)  335.19                80
 09/19/2023   21:19:54   (  -0.00,-104.69) (  -0.54,-107.19)  284.12                80
 09/20/2023   21:04:10   (  -0.00,-104.69) (   0.46,-102.73)  224.38                80