Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/26/2021   18:33:07   (  -0.00, -75.20) (   0.18, -74.44)   86.51                80
 01/29/2021   06:32:57   (   0.00, -75.21) (  -0.02, -75.03)   19.38                80
 01/31/2021   18:35:38   (  -0.01, -75.21) (  -0.09, -75.67)   52.04                80
 02/01/2021   18:19:21   (  -0.01, -75.22) (   0.92, -71.08)  471.51                80
 02/03/2021   06:40:49   (   0.01, -75.24) (   0.23, -76.27)  116.97                80
 02/04/2021   06:19:12   (   0.01, -75.25) (  -0.77, -71.68)  406.52                80
 02/05/2021   18:40:49   (  -0.01, -75.26) (  -0.40, -76.89)  187.45                80
 02/06/2021   18:24:33   (  -0.01, -75.27) (   0.66, -72.32)  336.47                80
 02/08/2021   06:46:01   (   0.01, -75.29) (   0.48, -77.50)  251.05                80