Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/03/2021   07:01:23   (  -0.00, -75.27) (   0.93, -79.33)  462.86                80
 11/04/2021   06:39:44   (   0.00, -75.28) (  -0.09, -74.73)   61.59                80
 11/06/2021   18:42:22   (  -0.00, -75.30) (  -0.00, -75.35)    5.91                80
 11/09/2021   06:47:29   (   0.02, -75.32) (   0.17, -75.92)   68.41                80
 11/10/2021   06:25:50   (   0.02, -75.33) (  -0.86, -71.33)  456.28                80
 11/11/2021   18:50:07   (  -0.01, -75.36) (  -0.25, -76.54)  134.63                80
 11/12/2021   18:28:28   (  -0.01, -75.37) (   0.78, -71.95)  390.80                80
 11/14/2021   06:52:33   (   0.01, -75.40) (   0.42, -77.11)  194.89                80
 11/15/2021   06:30:55   (   0.01, -75.43) (  -0.61, -72.52)  331.06                80