Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 10 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/01/2020   18:49:52   (   0.02, -75.20) (   0.00, -79.50)  477.89                 0
 10/02/2020   18:32:01   (   0.02, -75.22) (   0.14, -74.72)   57.11                80
 10/05/2020   06:34:33   (  -0.01, -75.25) (  -0.03, -75.33)    9.01                80
 10/07/2020   18:34:35   (   0.01, -75.30) (  -0.13, -75.97)   76.69                80
 10/08/2020   18:18:19   (   0.01, -75.32) (   0.90, -71.39)  447.51                80
 10/10/2020   06:39:48   (  -0.01, -75.34) (   0.24, -76.58)  141.36                80
 10/11/2020   06:18:12   (  -0.01, -75.36) (  -0.79, -72.00)  382.90                80
 10/12/2020   18:39:50   (   0.02, -75.39) (  -0.39, -77.23)  208.98                80
 10/13/2020   18:23:33   (   0.02, -75.42) (   0.64, -72.65)  315.77                80
 10/15/2020   06:45:03   (  -0.02, -75.45) (   0.50, -77.84)  271.85                80