Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/24/2021   06:51:14   (  -0.02, -75.20) (   0.35, -76.97)  200.72                80
 10/25/2021   06:29:35   (  -0.02, -75.20) (  -0.67, -72.37)  322.94                80
 10/26/2021   18:53:51   (   0.02, -75.21) (  -0.52, -77.57)  269.18                80
 10/27/2021   18:32:12   (   0.02, -75.22) (   0.50, -72.98)  254.84                80
 10/29/2021   06:56:19   (  -0.01, -75.23) (   0.64, -78.15)  333.39                80
 10/30/2021   06:34:40   (  -0.02, -75.23) (  -0.38, -73.56)  190.73                80
 10/31/2021   18:58:56   (   0.01, -75.25) (  -0.75, -78.77)  400.63                80
 11/01/2021   18:37:18   (   0.02, -75.26) (   0.27, -74.18)  124.12                80
 11/03/2021   07:01:23   (  -0.01, -75.28) (   0.93, -79.33)  462.64                80
 11/04/2021   06:39:46   (  -0.01, -75.30) (  -0.15, -74.75)   62.18                80