Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/24/2021   06:42:37   (  -0.03, -75.20) (   0.26, -76.59)  157.94                80
 02/25/2021   06:21:00   (  -0.01, -75.20) (  -0.75, -72.00)  365.66                80
 02/26/2021   18:42:37   (  -0.00, -75.21) (  -0.44, -77.21)  227.71                80
 02/27/2021   18:26:20   (  -0.00, -75.22) (   0.58, -72.63)  296.21                80
 03/01/2021   06:47:48   (   0.00, -75.25) (   0.56, -77.81)  291.48                80
 03/02/2021   06:26:11   (  -0.00, -75.26) (  -0.46, -73.22)  232.42                80
 03/03/2021   18:47:48   (   0.00, -75.27) (  -0.72, -78.44)  360.88                80
 03/04/2021   18:31:30   (   0.00, -75.29) (   0.30, -73.85)  163.57                80
 03/06/2021   06:52:59   (   0.00, -75.32) (   0.84, -79.03)  423.05                80
 03/07/2021   06:31:21   (   0.00, -75.34) (  -0.17, -74.44)  101.33                80
 03/08/2021   18:52:58   (  -0.00, -75.35) (  -0.99, -79.66)  491.72                80
 03/09/2021   18:36:42   (  -0.00, -75.37) (   0.09, -75.09)   33.34                80