Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/21/2021   18:49:24   (  -0.00, -75.18) (  -0.68, -78.32)  356.46                80
 05/22/2021   18:33:05   (  -0.00, -75.18) (   0.30, -73.72)  166.53                80
 05/24/2021   06:54:34   (  -0.02, -75.19) (   0.82, -78.90)  423.87                80
 05/25/2021   06:32:56   (  -0.02, -75.19) (  -0.22, -74.32)   99.21                80
 05/26/2021   18:54:32   (   0.02, -75.19) (  -0.95, -79.53)  494.75                80
 05/27/2021   18:38:15   (   0.02, -75.19) (   0.09, -74.94)   28.69                80
 05/30/2021   06:38:04   (  -0.01, -75.20) (   0.09, -75.52)   37.05                80
 05/31/2021   06:21:46   (  -0.00, -75.21) (  -0.95, -70.93)  487.05                80
 06/01/2021   18:40:43   (   0.00, -75.22) (  -0.22, -76.14)  105.51                80
 06/02/2021   18:24:25   (  -0.00, -75.23) (   0.83, -71.56)  419.08                80