Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 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)
 12/05/2020   18:18:58   (  -0.02, -75.22) (   0.85, -71.29)  448.07                80
 12/07/2020   06:40:28   (   0.01, -75.22) (   0.32, -76.48)  143.64                80
 12/08/2020   06:18:51   (   0.01, -75.22) (  -0.73, -71.90)  379.26                80
 12/09/2020   18:40:28   (  -0.01, -75.24) (  -0.43, -77.12)  213.67                80
 12/10/2020   18:24:12   (  -0.01, -75.25) (   0.62, -72.54)  309.82                80
 12/12/2020   06:45:41   (   0.01, -75.26) (   0.55, -77.72)  280.52                80
 12/13/2020   06:24:04   (   0.01, -75.27) (  -0.44, -73.13)  242.86                80
 12/14/2020   18:45:41   (  -0.01, -75.29) (  -0.71, -78.35)  349.91                80
 12/15/2020   18:29:25   (  -0.01, -75.30) (   0.34, -73.78)  173.90                80
 12/17/2020   06:50:54   (   0.00, -75.32) (   0.83, -78.96)  415.32                80
 12/18/2020   06:29:17   (  -0.00, -75.33) (  -0.22, -74.38)  108.62                80