Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 4 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 04/30/2021   18:47:46   (   0.02, -75.19) (  -0.61, -78.07)  327.70                80
 05/01/2021   18:31:28   (   0.02, -75.19) (   0.42, -73.48)  195.58                80
 05/03/2021   06:52:56   (  -0.02, -75.20) (   0.75, -78.66)  393.45                80
 05/04/2021   06:31:19   (  -0.02, -75.21) (  -0.29, -74.07)  130.12                80
 05/05/2021   18:52:54   (   0.01, -75.22) (  -0.92, -79.27)  462.71                80
 05/06/2021   18:36:37   (   0.01, -75.23) (   0.11, -74.68)   61.72                80
 05/09/2021   06:39:08   (  -0.01, -75.28) (   0.02, -75.28)    2.84                80
 05/11/2021   18:39:06   (   0.01, -75.31) (  -0.13, -75.90)   67.73                80
 05/12/2021   18:22:49   (   0.01, -75.33) (   0.90, -71.32)  457.38                80