Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/15/2021   18:22:55   (   0.04, -75.21) (   0.83, -71.71)  398.49                80
 03/17/2021   06:44:23   (  -0.04, -75.22) (   0.31, -76.90)  190.59                80
 03/18/2021   06:22:46   (  -0.04, -75.23) (  -0.71, -72.31)  332.85                80
 03/19/2021   18:44:22   (   0.04, -75.23) (  -0.50, -77.51)  260.54                80
 03/20/2021   18:28:06   (   0.04, -75.24) (   0.58, -72.94)  263.38                80
 03/22/2021   06:49:33   (  -0.03, -75.26) (   0.63, -78.11)  324.78                80
 03/23/2021   06:27:57   (  -0.03, -75.27) (  -0.44, -73.53)  199.10                80
 03/24/2021   18:49:33   (   0.02, -75.28) (  -0.75, -78.74)  393.80                80
 03/25/2021   18:33:15   (   0.01, -75.30) (   0.27, -74.15)  130.65                80
 03/27/2021   06:54:44   (  -0.01, -75.33) (   0.89, -79.33)  456.26                80
 03/28/2021   06:33:06   (  -0.01, -75.35) (  -0.13, -74.74)   68.18                80