Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/31/2020   18:26:03   (  -0.01, -75.22) (   0.49, -72.87)  266.63                80
 01/02/2021   06:47:33   (   0.01, -75.22) (   0.67, -78.06)  324.36                80
 01/03/2021   06:25:56   (   0.01, -75.22) (  -0.39, -73.48)  198.35                80
 01/04/2021   18:47:33   (  -0.02, -75.22) (  -0.82, -78.69)  395.69                80
 01/05/2021   18:31:16   (  -0.02, -75.23) (   0.24, -74.11)  127.62                80
 01/07/2021   06:52:45   (   0.01, -75.24) (   0.91, -79.30)  461.93                80
 01/08/2021   06:31:08   (   0.01, -75.25) (  -0.09, -74.71)   61.32                80
 01/10/2021   18:33:49   (  -0.01, -75.27) (   0.00, -75.35)    9.49                80
 01/13/2021   06:39:01   (   0.00, -75.30) (   0.14, -75.95)   73.73                80