Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 4 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)
 04/07/2022   11:07:28   (  -0.03,-137.21) (   0.52,-139.73)  286.78                80
 04/08/2022   10:46:25   (  -0.03,-137.20) (  -0.48,-135.27)  220.37                80
 04/09/2022   23:11:33   (   0.02,-137.19) (  -0.79,-140.68)  399.11                80
 04/10/2022   22:50:29   (   0.02,-137.18) (   0.22,-136.23)  107.78                80
 04/13/2022   10:54:25   (  -0.01,-137.17) (  -0.03,-137.16)    1.23                80
 04/15/2022   23:01:10   (   0.01,-137.13) (  -0.23,-138.13)  113.57                80
 04/16/2022   22:40:07   (   0.02,-137.12) (   0.79,-133.68)  392.43                80
 04/18/2022   11:05:06   (  -0.01,-137.10) (   0.41,-139.06)  222.93                80
 04/19/2022   10:44:01   (  -0.02,-137.08) (  -0.55,-134.60)  282.45                80