Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 7 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2020   06:45:09   (   0.01, -75.20) (   0.67, -78.15)  336.92                80
 07/13/2020   06:23:32   (   0.01, -75.19) (  -0.34, -73.57)  184.88                80
 07/14/2020   18:45:12   (  -0.00, -75.20) (  -0.79, -78.80)  410.78                80
 07/15/2020   18:28:55   (   0.00, -75.20) (   0.22, -74.22)  111.13                80
 07/17/2020   06:50:26   (  -0.02, -75.20) (   0.93, -79.42)  481.19                80
 07/18/2020   06:28:49   (  -0.02, -75.20) (  -0.08, -74.83)   40.86                80
 07/20/2020   18:31:32   (   0.01, -75.20) (  -0.03, -75.49)   32.12                80
 07/21/2020   18:15:15   (   0.01, -75.21) (   0.98, -70.91)  490.48                80
 07/23/2020   06:36:46   (  -0.01, -75.21) (   0.17, -76.10)  100.79                80
 07/24/2020   06:15:09   (  -0.00, -75.22) (  -0.83, -71.52)  422.03                80