Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/14/2023   11:21:32   (   0.00,-137.29) (   0.67,-140.36)  348.98                80
 01/15/2023   11:00:32   (   0.00,-137.28) (  -0.28,-135.91)  155.89                80
 01/16/2023   23:23:06   (  -0.00,-137.26) (  -0.95,-141.34)  466.37                80
 01/17/2023   23:07:27   (  -0.00,-137.24) (   0.07,-136.91)   37.90                80
 01/20/2023   11:11:33   (   0.01,-137.19) (   0.13,-137.87)   77.32                80
 01/21/2023   10:50:32   (   0.01,-137.16) (  -0.83,-133.42)  426.25                80
 01/22/2023   23:13:06   (  -0.01,-137.12) (  -0.38,-138.86)  197.68                80
 01/23/2023   22:57:26   (  -0.01,-137.10) (   0.59,-134.42)  305.78                80
 01/25/2023   11:19:51   (   0.01,-137.06) (   0.63,-139.81)  313.86                80
 01/26/2023   10:58:51   (   0.01,-137.03) (  -0.34,-135.37)  189.41                80