Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/05/2021   18:40:50   (   0.02, -75.20) (  -0.36, -76.90)  193.89                80
 02/06/2021   18:24:32   (  -0.01, -75.20) (   0.65, -72.31)  329.03                80
 02/08/2021   06:46:00   (   0.01, -75.18) (   0.56, -77.48)  262.88                80
 02/09/2021   06:24:23   (   0.01, -75.18) (  -0.51, -72.90)  259.27                80
 02/10/2021   18:46:01   (  -0.00, -75.18) (  -0.67, -78.12)  335.29                80
 02/11/2021   18:29:44   (  -0.00, -75.18) (   0.39, -73.54)  187.69                80
 02/13/2021   06:51:11   (   0.00, -75.19) (   0.81, -78.71)  402.27                80
 02/14/2021   06:29:35   (   0.00, -75.19) (  -0.26, -74.14)  121.10                80
 02/15/2021   18:51:12   (   0.00, -75.21) (  -0.92, -79.35)  472.04                80
 02/16/2021   18:34:55   (   0.00, -75.22) (   0.09, -74.76)   51.93                80