Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 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)
 10/31/2021   18:56:16   (   0.02, -75.26) (  -0.77, -78.76)  399.64                80
 11/01/2021   18:39:57   (   0.02, -75.27) (   0.26, -74.17)  125.24                80
 11/03/2021   07:01:24   (  -0.01, -75.28) (   0.88, -79.34)  462.07                80
 11/04/2021   06:39:45   (  -0.00, -75.29) (  -0.15, -74.75)   63.08                80
 11/06/2021   18:42:22   (  -0.01, -75.34) (   0.00, -75.36)    2.70                80
 11/09/2021   06:47:29   (   0.01, -75.37) (   0.16, -75.92)   63.64                80
 11/10/2021   06:25:51   (   0.01, -75.39) (  -0.93, -71.34)  461.59                80
 11/11/2021   18:50:07   (  -0.01, -75.42) (  -0.24, -76.55)  127.73                80
 11/12/2021   18:28:28   (  -0.01, -75.44) (   0.80, -71.95)  398.33                80