Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 12 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/24/2022   11:03:45   (   0.01,-137.34) (  -0.07,-136.94)   44.52                80
 12/26/2022   23:08:01   (  -0.02,-137.32) (  -0.17,-137.94)   71.23                80
 12/27/2022   22:49:41   (  -0.02,-137.32) (   0.82,-133.51)  434.06                80
 12/29/2022   11:14:48   (   0.02,-137.31) (   0.36,-138.91)  182.75                80
 12/30/2022   10:53:48   (   0.02,-137.30) (  -0.64,-134.48)  322.43                80
 12/31/2022   23:19:02   (  -0.03,-137.29) (  -0.64,-139.90)  299.14                80
 01/01/2023   22:58:03   (  -0.03,-137.27) (   0.36,-135.47)  205.74                80
 01/03/2023   11:23:08   (   0.03,-137.26) (   0.88,-140.86)  411.98                80
 01/04/2023   11:02:09   (   0.04,-137.24) (  -0.13,-136.43)   92.46                80
 01/06/2023   23:06:25   (  -0.04,-137.20) (  -0.07,-137.43)   26.39                80