Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 6 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/04/2021   06:45:54   (  -0.01, -75.25) (   0.29, -76.74)  169.38                80
 06/05/2021   06:24:15   (  -0.01, -75.26) (  -0.69, -72.14)  355.29                80
 06/06/2021   18:45:53   (   0.02, -75.29) (  -0.43, -77.36)  235.39                80
 06/07/2021   18:29:35   (   0.02, -75.31) (   0.61, -72.77)  289.59                80
 06/09/2021   06:51:02   (  -0.03, -75.33) (   0.55, -77.95)  298.34                80
 06/10/2021   06:32:05   (  -0.02, -75.35) (  -0.49, -73.36)  226.73                80
 06/11/2021   18:51:01   (   0.03, -75.38) (  -0.69, -78.57)  363.62                80
 06/12/2021   18:34:44   (   0.03, -75.40) (   0.35, -73.99)  161.78                80
 06/14/2021   06:53:31   (  -0.03, -75.43) (   0.80, -79.16)  425.28                80
 06/15/2021   06:37:14   (  -0.03, -75.45) (  -0.24, -74.58)  100.35                80
 06/16/2021   18:56:10   (   0.04, -75.50) (  -0.94, -79.79)  489.29                80