Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/25/2021   18:49:23   (  -0.01, -75.20) (  -0.88, -79.02)  435.94                80
 01/26/2021   18:33:07   (  -0.01, -75.20) (   0.18, -74.45)   86.88                80
 01/29/2021   06:32:58   (   0.01, -75.21) (  -0.03, -75.04)   19.89                80
 01/31/2021   18:35:38   (  -0.01, -75.22) (  -0.08, -75.68)   51.54                80
 02/01/2021   18:19:21   (  -0.00, -75.23) (   0.93, -71.09)  472.07                80
 02/03/2021   06:40:49   (   0.00, -75.25) (   0.23, -76.27)  116.18                80
 02/04/2021   06:19:12   (   0.00, -75.26) (  -0.78, -71.68)  407.40                80
 02/05/2021   18:40:49   (  -0.01, -75.26) (  -0.39, -76.90)  186.41                80
 02/06/2021   18:24:33   (  -0.01, -75.28) (   0.68, -72.32)  337.63                80