Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/21/2021   18:37:26   (   0.03, -75.18) (  -0.17, -75.99)   92.22                80
 02/22/2021   18:21:10   (   0.02, -75.19) (   0.90, -71.41)  431.18                80
 02/24/2021   06:42:36   (   0.01, -75.20) (   0.35, -76.57)  156.93                80
 02/25/2021   06:20:59   (   0.01, -75.21) (  -0.72, -71.99)  366.35                80
 02/26/2021   18:42:37   (  -0.01, -75.21) (  -0.46, -77.21)  227.69                80
 02/27/2021   18:26:19   (  -0.00, -75.22) (   0.56, -72.62)  296.25                80
 03/01/2021   06:47:48   (   0.00, -75.25) (   0.58, -77.81)  291.23                80
 03/02/2021   06:26:10   (   0.00, -75.26) (  -0.43, -73.22)  232.78                80
 03/03/2021   18:47:47   (  -0.00, -75.27) (  -0.74, -78.43)  360.63                80
 03/04/2021   18:31:31   (  -0.00, -75.29) (   0.34, -73.86)  163.83                80
 03/06/2021   06:52:58   (   0.00, -75.33) (   0.86, -79.03)  422.75                80