Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 7 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/13/2020   06:23:33   (   0.00, -75.19) (  -0.38, -73.58)  184.88                80
 07/14/2020   18:45:11   (   0.00, -75.20) (  -0.81, -78.80)  410.56                80
 07/15/2020   18:28:55   (   0.00, -75.20) (   0.21, -74.22)  111.48                80
 07/17/2020   06:50:25   (  -0.01, -75.20) (   0.94, -79.41)  480.89                80
 07/18/2020   06:28:49   (  -0.01, -75.20) (  -0.07, -74.83)   41.23                80
 07/20/2020   18:31:32   (   0.01, -75.21) (  -0.03, -75.49)   31.54                80
 07/21/2020   18:15:15   (   0.01, -75.21) (   0.99, -70.90)  491.13                80
 07/23/2020   06:36:45   (  -0.01, -75.22) (   0.17, -76.10)  100.24                80
 07/24/2020   06:15:09   (   0.00, -75.22) (  -0.84, -71.52)  422.67                80
 07/25/2020   18:36:47   (  -0.00, -75.24) (  -0.31, -76.74)  171.09                80
 07/26/2020   18:20:31   (  -0.01, -75.25) (   0.70, -72.16)  352.25                80