Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 8 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)
 08/03/2021   18:45:25   (   0.11, -75.23) (  -0.26, -76.84)  184.07                80
 08/04/2021   18:29:07   (   0.11, -75.24) (   0.80, -72.26)  340.26                80
 08/06/2021   06:50:35   (  -0.12, -75.25) (   0.37, -77.43)  249.12                80
 08/07/2021   06:29:45   (  -0.12, -75.26) (  -0.69, -72.85)  275.27                32
 08/08/2021   18:50:33   (   0.13, -75.29) (  -0.49, -78.05)  315.59                80
 08/09/2021   18:34:15   (   0.13, -75.30) (   0.57, -73.47)  209.42                80
 08/11/2021   06:55:42   (  -0.14, -75.32) (   0.61, -78.64)  378.55                80
 08/12/2021   06:34:05   (  -0.14, -75.34) (  -0.45, -74.06)  146.66                80
 08/13/2021   18:55:40   (   0.14, -75.37) (  -0.72, -79.26)  443.38                80
 08/14/2021   18:39:22   (   0.14, -75.39) (   0.28, -74.67)   82.19                80