Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 12 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/04/2023   21:19:05   (   0.00,-104.64) (  -0.29,-105.79)  132.28                80
 12/05/2023   21:03:19   (   0.01,-104.64) (   0.75,-101.33)  377.59                80
 12/07/2023   09:25:33   (  -0.01,-104.67) (   0.46,-106.67)  228.38                80
 12/08/2023   09:04:27   (  -0.01,-104.67) (  -0.58,-102.21)  281.42                80
 12/09/2023   21:26:49   (  -0.00,-104.64) (  -0.68,-107.58)  335.74                80
 12/10/2023   21:11:01   (  -0.01,-104.63) (   0.31,-103.10)  174.38                80
 12/12/2023   09:33:16   (   0.02,-104.67) (   0.88,-108.45)  431.48                80
 12/13/2023   09:12:08   (   0.02,-104.66) (  -0.12,-103.97)   77.83                80
 12/15/2023   21:16:04   (  -0.01,-104.61) (  -0.07,-104.88)   31.55                80
 12/16/2023   21:00:17   (  -0.00,-104.60) (   0.93,-100.41)  477.82                80