Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 12 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2022   23:02:18   (  -0.02,-137.34) (   0.27,-135.98)  155.49                80
 12/23/2022   11:24:45   (   0.02,-137.34) (   0.92,-141.38)  460.83                80
 12/24/2022   11:03:45   (   0.02,-137.33) (  -0.07,-136.95)   44.36                80
 12/26/2022   23:10:41   (  -0.01,-137.32) (  -0.16,-137.95)   72.36                80
 12/27/2022   22:49:41   (   0.00,-137.31) (   0.83,-133.51)  432.59                80
 12/29/2022   11:14:48   (  -0.00,-137.30) (   0.35,-138.92)  184.45                80
 12/30/2022   10:53:48   (  -0.01,-137.29) (  -0.65,-134.48)  320.45                80
 12/31/2022   23:19:03   (   0.00,-137.27) (  -0.62,-139.91)  301.32                80
 01/01/2023   22:58:03   (   0.00,-137.26) (   0.38,-135.47)  203.41                80
 01/03/2023   11:23:08   (   0.01,-137.24) (   0.85,-140.87)  414.32                80