Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 3 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/09/2023   20:49:47   (   0.00,-104.73) (   0.64,-101.94)  317.61                80
 03/11/2023   09:12:10   (  -0.00,-104.73) (   0.58,-107.33)  296.74                80
 03/12/2023   08:51:08   (  -0.00,-104.73) (  -0.43,-102.89)  210.42                80
 03/13/2023   21:13:39   (  -0.00,-104.73) (  -0.82,-108.30)  407.22                80
 03/14/2023   20:57:57   (  -0.01,-104.73) (   0.20,-103.85)   99.91                80
 03/17/2023   09:01:58   (   0.01,-104.72) (   0.03,-104.79)    7.78                80
 03/18/2023   08:40:57   (   0.01,-104.72) (  -1.00,-100.35)  499.06                80
 03/19/2023   21:03:27   (  -0.01,-104.72) (  -0.23,-105.76)  118.87                80
 03/20/2023   20:47:44   (  -0.01,-104.72) (   0.74,-101.31)  388.54                80
 03/22/2023   09:10:08   (   0.01,-104.73) (   0.42,-106.71)  224.96                80