Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 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)
 05/26/2021   18:54:32   (   0.02, -75.19) (  -0.96, -79.53)  494.10                80
 05/27/2021   18:38:15   (   0.02, -75.20) (   0.08, -74.94)   29.29                80
 05/30/2021   06:40:45   (  -0.01, -75.21) (   0.05, -75.53)   36.28                80
 05/31/2021   06:19:06   (  -0.00, -75.21) (  -0.94, -70.93)  487.84                80
 06/01/2021   18:40:44   (   0.00, -75.23) (  -0.18, -76.15)  104.12                80
 06/02/2021   18:24:25   (  -0.00, -75.25) (   0.80, -71.55)  420.64                80
 06/04/2021   06:45:53   (  -0.00, -75.27) (   0.30, -76.74)  166.81                80
 06/05/2021   06:24:15   (   0.00, -75.29) (  -0.69, -72.14)  358.27                80
 06/06/2021   18:45:52   (   0.01, -75.32) (  -0.43, -77.36)  232.70                80
 06/07/2021   18:29:35   (   0.01, -75.34) (   0.61, -72.78)  292.70                80