Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 14.  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) (   0.70,-140.35)  348.90                80
 01/15/2023   11:00:32   (   0.00,-137.28) (  -0.31,-135.92)  155.96                80
 01/16/2023   23:23:07   (  -0.00,-137.26) (  -0.92,-141.35)  466.28                80
 01/17/2023   23:07:27   (  -0.00,-137.24) (   0.10,-136.92)   38.12                80
 01/20/2023   11:11:32   (   0.01,-137.19) (   0.16,-137.87)   77.12                80
 01/21/2023   10:50:33   (   0.01,-137.16) (  -0.86,-133.43)  426.41                80
 01/22/2023   23:13:06   (  -0.01,-137.12) (  -0.40,-138.86)  197.51                80
 01/23/2023   22:57:25   (  -0.01,-137.10) (   0.57,-134.41)  305.96                80
 01/25/2023   11:19:51   (   0.01,-137.06) (   0.65,-139.81)  313.66                80
 01/26/2023   10:58:51   (   0.01,-137.03) (  -0.38,-135.37)  189.60                80
 01/27/2023   23:21:25   (  -0.01,-136.99) (  -0.87,-140.80)  434.70                80