Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/17/2023   23:07:26   (  -0.00,-137.24) (   0.05,-136.90)   38.27                80
 01/20/2023   11:11:32   (   0.01,-137.19) (   0.15,-137.87)   76.92                80
 01/21/2023   10:50:32   (   0.01,-137.16) (  -0.82,-133.42)  426.65                80
 01/22/2023   23:13:06   (  -0.01,-137.12) (  -0.38,-138.86)  197.24                80
 01/23/2023   22:57:25   (  -0.01,-137.10) (   0.59,-134.41)  306.25                80
 01/25/2023   11:19:51   (   0.01,-137.06) (   0.62,-139.81)  313.28                80
 01/26/2023   10:58:50   (   0.01,-137.03) (  -0.35,-135.36)  190.02                80
 01/27/2023   23:21:24   (  -0.01,-136.99) (  -0.89,-140.79)  434.25                80
 01/28/2023   23:05:44   (  -0.01,-136.96) (   0.15,-136.36)   68.96                80