Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 1 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/11/2023   23:14:46   (   0.00,-137.31) (  -0.49,-139.39)  237.46                80
 01/12/2023   22:59:07   (  -0.00,-137.31) (   0.52,-134.95)  267.95                80
 01/14/2023   11:21:32   (   0.00,-137.29) (   0.71,-140.35)  349.10                80
 01/15/2023   11:00:33   (   0.00,-137.28) (  -0.30,-135.92)  155.73                80
 01/16/2023   23:23:07   (  -0.00,-137.26) (  -0.93,-141.35)  466.54                80
 01/17/2023   23:07:27   (  -0.00,-137.24) (   0.08,-136.91)   37.73                80
 01/20/2023   11:11:32   (   0.01,-137.19) (   0.19,-137.86)   77.60                80
 01/21/2023   10:50:33   (   0.01,-137.16) (  -0.83,-133.43)  425.93                80
 01/22/2023   23:13:07   (  -0.01,-137.12) (  -0.38,-138.87)  198.04                80
 01/23/2023   22:57:27   (  -0.01,-137.10) (   0.58,-134.42)  305.38                80