Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 12 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/07/2023   09:25:33   (  -0.00,-104.68) (   0.47,-106.67)  227.40                80
 12/08/2023   09:04:26   (  -0.00,-104.68) (  -0.57,-102.20)  282.68                80
 12/09/2023   21:26:49   (   0.00,-104.65) (  -0.69,-107.58)  334.25                80
 12/10/2023   21:11:02   (   0.01,-104.65) (   0.35,-103.11)  175.82                80
 12/12/2023   09:33:17   (  -0.00,-104.69) (   0.84,-108.46)  430.08                80
 12/13/2023   09:12:09   (  -0.01,-104.68) (  -0.15,-103.98)   79.54                80
 12/15/2023   21:16:05   (   0.00,-104.64) (  -0.05,-104.89)   28.70                80
 12/16/2023   21:00:17   (  -0.00,-104.64) (   0.94,-100.41)  481.12                80
 12/18/2023   09:22:32   (   0.01,-104.67) (   0.23,-105.77)  124.58                80
 12/19/2023   09:01:24   (   0.01,-104.67) (  -0.76,-101.29)  385.35                80