Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 6 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)
 06/26/2020   06:48:16   (   0.02, -75.20) (   0.86, -78.95)  428.28                80
 06/27/2020   06:26:40   (   0.02, -75.20) (  -0.14, -74.37)   94.15                80
 06/29/2020   18:29:24   (  -0.02, -75.22) (   0.05, -75.03)   22.23                80
 07/02/2020   06:34:38   (  -0.00, -75.24) (   0.07, -75.65)   46.11                80
 07/03/2020   06:13:01   (  -0.01, -75.25) (  -0.94, -71.06)  476.73                80
 07/04/2020   18:34:40   (   0.01, -75.27) (  -0.21, -76.30)  117.20                80
 07/05/2020   18:18:24   (   0.01, -75.28) (   0.80, -71.71)  406.25                80
 07/07/2020   06:39:54   (  -0.01, -75.30) (   0.33, -76.91)  183.05                80
 07/08/2020   06:18:18   (  -0.01, -75.32) (  -0.67, -72.33)  340.78                80