Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/03/2021   18:47:48   (   0.03, -75.21) (  -0.70, -78.44)  368.07                80
 03/04/2021   18:31:31   (   0.03, -75.22) (   0.32, -73.85)  155.35                80
 03/06/2021   06:52:59   (  -0.03, -75.22) (   0.82, -79.03)  434.10                80
 03/07/2021   06:31:21   (  -0.02, -75.23) (  -0.19, -74.44)   89.25                80
 03/09/2021   18:36:41   (  -0.00, -75.25) (   0.04, -75.07)   20.48                80
 03/12/2021   06:39:12   (   0.00, -75.29) (   0.09, -75.67)   42.95                80
 03/13/2021   06:17:35   (   0.00, -75.31) (  -0.92, -71.08)  481.53                80
 03/14/2021   18:39:12   (  -0.00, -75.34) (  -0.23, -76.30)  109.92                80
 03/15/2021   18:22:56   (  -0.00, -75.36) (   0.85, -71.72)  415.33                80