Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 7 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/05/2021   06:55:04   (  -0.07, -75.12) (   0.91, -79.37)  485.05                80
 07/06/2021   06:38:46   (  -0.07, -75.12) (  -0.14, -74.79)   38.18                80
 07/08/2021   18:38:45   (   0.08, -75.14) (   0.01, -75.41)   31.33                80
 07/09/2021   18:22:28   (   0.07, -75.14) (   1.06, -70.83)  492.36                80
 07/11/2021   06:41:15   (  -0.08, -75.14) (   0.08, -76.01)   97.76                80
 07/12/2021   06:24:56   (  -0.08, -75.15) (  -0.91, -71.41)  426.12                80
 07/13/2021   18:43:53   (   0.09, -75.17) (  -0.26, -76.62)  166.02                80
 07/14/2021   18:27:35   (   0.09, -75.18) (   0.79, -72.03)  358.46                80
 07/16/2021   06:46:23   (  -0.10, -75.19) (   0.36, -77.21)  230.24                80
 07/17/2021   06:30:05   (  -0.09, -75.20) (  -0.69, -72.62)  294.29                80
 07/18/2021   18:49:01   (   0.11, -75.23) (  -0.46, -77.84)  297.34                80