Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/24/2021   06:54:34   (  -0.02, -75.19) (   0.82, -78.90)  423.86                80
 05/25/2021   06:32:56   (  -0.02, -75.19) (  -0.22, -74.32)   99.33                80
 05/26/2021   18:54:33   (   0.02, -75.19) (  -0.95, -79.53)  494.07                80
 05/27/2021   18:38:15   (   0.02, -75.20) (   0.09, -74.94)   29.50                80
 05/30/2021   06:40:45   (  -0.01, -75.21) (   0.04, -75.53)   35.89                80
 05/31/2021   06:21:46   (  -0.00, -75.22) (  -0.94, -70.93)  488.28                80
 06/01/2021   18:40:44   (   0.00, -75.24) (  -0.18, -76.15)  103.83                80
 06/02/2021   18:24:25   (  -0.00, -75.25) (   0.80, -71.55)  420.98                80
 06/04/2021   06:43:14   (  -0.00, -75.28) (   0.30, -76.74)  166.29                80
 06/05/2021   06:26:55   (   0.00, -75.29) (  -0.68, -72.14)  358.84                80
 06/06/2021   18:45:52   (   0.01, -75.32) (  -0.44, -77.36)  232.22                80