Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2022 8 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)
 08/10/2022   11:06:19   (   0.06,-137.32) (   0.29,-138.32)  114.15                80
 08/11/2022   10:45:15   (   0.06,-137.31) (  -0.75,-133.87)  393.57                80
 08/12/2022   23:07:41   (  -0.06,-137.30) (  -0.51,-139.27)  225.05                80
 08/13/2022   22:51:57   (  -0.05,-137.29) (   0.52,-134.82)  282.76                80
 08/15/2022   11:11:33   (   0.05,-137.29) (   0.72,-140.18)  329.28                80
 08/16/2022   10:53:08   (   0.05,-137.29) (  -0.31,-135.73)  178.36                80
 08/17/2022   23:15:35   (  -0.05,-137.27) (  -0.94,-141.13)  440.84                80
 08/18/2022   22:59:50   (  -0.05,-137.26) (   0.10,-136.68)   66.42                80
 08/21/2022   11:01:02   (   0.04,-137.23) (   0.11,-137.59)   40.09                80
 08/22/2022   10:45:17   (   0.04,-137.22) (  -0.87,-133.12)  466.44                80
 08/23/2022   23:05:04   (  -0.03,-137.18) (  -0.31,-138.54)  154.51                80