Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/04/2021   18:29:07   (   0.11, -75.22) (   0.80, -72.26)  338.50                80
 08/06/2021   06:50:35   (  -0.12, -75.22) (   0.37, -77.43)  252.15                80
 08/07/2021   06:31:37   (  -0.12, -75.22) (  -0.69, -72.85)  271.38                80
 08/08/2021   18:50:33   (   0.13, -75.24) (  -0.49, -78.05)  320.94                80
 08/09/2021   18:34:14   (   0.13, -75.24) (   0.51, -73.46)  203.17                80
 08/11/2021   06:55:42   (  -0.14, -75.25) (   0.61, -78.64)  386.11                80
 08/12/2021   06:34:04   (  -0.14, -75.26) (  -0.39, -74.04)  138.22                80
 08/13/2021   18:55:39   (   0.14, -75.28) (  -0.78, -79.25)  453.23                80
 08/14/2021   18:39:22   (   0.14, -75.29) (   0.28, -74.67)   71.41                80
 08/17/2021   06:39:12   (  -0.15, -75.32) (  -0.15, -75.25)    7.51                80