Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 12 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/05/2023   21:03:19   (   0.01,-104.64) (   0.77,-101.33)  377.72                80
 12/07/2023   09:25:33   (  -0.01,-104.67) (   0.44,-106.68)  228.34                80
 12/08/2023   09:04:26   (  -0.01,-104.67) (  -0.54,-102.20)  281.47                80
 12/09/2023   21:26:49   (  -0.01,-104.64) (  -0.66,-107.58)  335.58                80
 12/10/2023   21:11:02   (  -0.02,-104.63) (   0.33,-103.11)  174.48                80
 12/12/2023   09:33:16   (   0.02,-104.67) (   0.86,-108.45)  431.53                80
 12/13/2023   09:12:09   (   0.02,-104.66) (  -0.13,-103.98)   77.75                80
 12/15/2023   21:16:04   (  -0.01,-104.61) (  -0.07,-104.89)   31.58                80
 12/16/2023   21:00:17   (  -0.01,-104.60) (   0.93,-100.41)  477.78                80
 12/18/2023   09:22:31   (   0.01,-104.63) (   0.24,-105.76)  128.23                80