Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 12 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/07/2022   11:17:54   (   0.00,-137.33) (   0.59,-139.91)  294.10                80
 12/08/2022   10:56:54   (   0.01,-137.33) (  -0.38,-135.47)  211.70                80
 12/09/2022   23:19:31   (  -0.01,-137.32) (  -0.80,-140.92)  409.88                80
 12/10/2022   23:03:51   (  -0.02,-137.32) (   0.17,-136.48)   95.66                80
 12/13/2022   11:07:58   (   0.01,-137.32) (   0.07,-137.44)   15.26                80
 12/14/2022   10:46:59   (   0.01,-137.31) (  -0.97,-133.02)  489.80                80
 12/15/2022   23:12:15   (  -0.01,-137.29) (  -0.27,-138.45)  132.91                80
 12/16/2022   22:53:03   (  -0.00,-137.28) (   0.71,-134.01)  371.87                28
 12/18/2022   11:16:22   (   0.01,-137.27) (   0.49,-139.42)  244.77                80
 12/19/2022   10:55:22   (   0.01,-137.26) (  -0.49,-134.98)  259.56                80