Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 9 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/30/2021   18:44:43   (   0.09, -75.17) (  -0.13, -76.24)  120.72                80
 10/01/2021   18:28:25   (   0.10, -75.15) (   0.88, -71.64)  399.80                80
 10/03/2021   06:49:51   (  -0.09, -75.11) (   0.30, -76.81)  193.43                80
 10/04/2021   06:28:13   (  -0.10, -75.09) (  -0.72, -72.21)  327.37                80
 10/05/2021   18:52:28   (   0.09, -75.06) (  -0.47, -77.42)  269.58                80
 10/06/2021   18:30:50   (   0.10, -75.04) (   0.61, -72.83)  251.71                80
 10/08/2021   06:54:57   (  -0.09, -75.01) (   0.57, -78.00)  340.29                80
 10/09/2021   06:33:18   (  -0.09, -74.99) (  -0.45, -73.41)  180.94                80
 10/10/2021   18:57:33   (   0.08, -74.96) (  -0.73, -78.61)  415.73                80
 10/11/2021   18:35:55   (   0.09, -74.94) (   0.28, -74.01)  105.65                80
 10/13/2021   07:00:01   (  -0.08, -74.92) (   0.88, -79.18)  485.75                80