Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/22/2021   18:33:06   (   0.01, -75.19) (   0.35, -73.73)  166.29                80
 05/24/2021   06:54:33   (  -0.02, -75.19) (   0.83, -78.90)  423.78                80
 05/25/2021   06:32:56   (  -0.02, -75.19) (  -0.21, -74.31)   99.41                80
 05/26/2021   18:54:32   (   0.02, -75.19) (  -0.96, -79.53)  494.34                80
 05/27/2021   18:38:15   (   0.02, -75.19) (   0.08, -74.94)   29.08                80
 05/30/2021   06:38:05   (  -0.01, -75.21) (   0.05, -75.53)   36.39                80
 05/31/2021   06:21:47   (  -0.01, -75.21) (  -1.00, -70.94)  487.65                80
 06/01/2021   18:40:44   (   0.01, -75.23) (  -0.17, -76.15)  104.73                80
 06/02/2021   18:24:25   (   0.01, -75.24) (   0.81, -71.55)  419.98                80
 06/04/2021   06:43:13   (  -0.01, -75.27) (   0.29, -76.74)  167.31                80
 06/05/2021   06:26:55   (  -0.01, -75.28) (  -0.69, -72.14)  357.76                80