Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 4 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/09/2022   23:11:33   (   0.03,-137.20) (  -0.77,-140.69)  398.15                80
 04/10/2022   22:50:30   (   0.03,-137.19) (   0.24,-136.24)  109.00                80
 04/13/2022   10:54:26   (  -0.03,-137.19) (  -0.05,-137.17)    3.28                80
 04/15/2022   23:01:11   (   0.02,-137.16) (  -0.21,-138.13)  110.81                80
 04/16/2022   22:40:07   (   0.03,-137.15) (   0.80,-133.68)  395.47                80
 04/18/2022   11:05:06   (  -0.02,-137.14) (   0.39,-139.06)  219.23                80
 04/19/2022   10:44:03   (  -0.03,-137.12) (  -0.62,-134.61)  286.43                80
 04/20/2022   23:09:11   (   0.02,-137.08) (  -0.63,-140.02)  335.70                80
 04/21/2022   22:48:07   (   0.02,-137.05) (   0.33,-135.56)  169.48                80