Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 4 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/10/2022   22:50:30   (   0.03,-137.20) (   0.23,-136.23)  109.12                80
 04/13/2022   10:54:26   (  -0.03,-137.19) (  -0.04,-137.17)    3.28                80
 04/15/2022   23:01:10   (   0.02,-137.16) (  -0.21,-138.13)  110.60                80
 04/16/2022   22:40:07   (   0.03,-137.15) (   0.80,-133.68)  395.71                80
 04/18/2022   11:05:06   (  -0.02,-137.14) (   0.39,-139.06)  218.97                80
 04/19/2022   10:44:02   (  -0.03,-137.12) (  -0.57,-134.60)  286.71                80
 04/20/2022   23:09:11   (   0.02,-137.08) (  -0.62,-140.02)  335.37                80
 04/21/2022   22:48:07   (   0.02,-137.06) (   0.34,-135.56)  169.83                80
 04/23/2022   11:13:06   (  -0.01,-137.03) (   0.85,-140.95)  446.37                80