Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 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)
 03/27/2021   06:54:44   (  -0.03, -75.23) (   0.87, -79.33)  467.22                80
 03/28/2021   06:33:06   (  -0.03, -75.23) (  -0.15, -74.74)   56.29                80
 03/30/2021   18:35:45   (   0.03, -75.25) (  -0.01, -75.36)   13.57                80
 04/02/2021   06:40:57   (  -0.03, -75.29) (   0.09, -75.97)   77.09                80
 04/03/2021   06:19:20   (  -0.03, -75.30) (  -0.93, -71.38)  446.90                80
 04/04/2021   18:40:56   (   0.02, -75.31) (  -0.24, -76.59)  146.08                80
 04/05/2021   18:24:38   (   0.02, -75.32) (   0.78, -72.01)  378.62                80
 04/07/2021   06:46:07   (  -0.01, -75.36) (   0.39, -77.18)  207.38                80
 04/08/2021   06:24:29   (  -0.01, -75.38) (  -0.63, -72.60)  317.57                80