Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/09/2021   06:24:23   (  -0.02, -75.17) (  -0.50, -72.90)  258.10                80
 02/10/2021   18:46:01   (   0.02, -75.17) (  -0.62, -78.13)  336.52                80
 02/11/2021   18:29:44   (   0.02, -75.17) (   0.38, -73.54)  186.20                80
 02/13/2021   06:51:12   (  -0.02, -75.17) (   0.75, -78.72)  404.49                80
 02/14/2021   06:29:35   (  -0.02, -75.17) (  -0.25, -74.13)  118.63                80
 02/15/2021   18:51:12   (   0.02, -75.19) (  -0.93, -79.35)  474.54                80
 02/16/2021   18:34:56   (   0.02, -75.20) (   0.14, -74.77)   49.22                80
 02/19/2021   06:37:26   (  -0.03, -75.22) (  -0.01, -75.37)   16.42                80
 02/21/2021   18:37:26   (   0.04, -75.25) (  -0.15, -75.99)   85.14                80
 02/22/2021   18:21:10   (   0.04, -75.26) (   0.92, -71.42)  438.97                80