Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/27/2021   18:38:15   (   0.02, -75.20) (   0.08, -74.94)   29.48                80
 05/30/2021   06:40:45   (  -0.01, -75.20) (   0.04, -75.53)   36.43                80
 05/31/2021   06:21:46   (  -0.00, -75.21) (  -0.94, -70.93)  487.65                80
 06/01/2021   18:40:44   (   0.01, -75.23) (  -0.18, -76.15)  104.27                80
 06/02/2021   18:24:26   (   0.00, -75.25) (   0.86, -71.56)  420.47                80
 06/04/2021   06:43:13   (  -0.01, -75.27) (   0.30, -76.74)  167.18                80
 06/05/2021   06:26:56   (  -0.00, -75.29) (  -0.74, -72.15)  357.88                80
 06/06/2021   18:45:52   (   0.01, -75.32) (  -0.44, -77.36)  233.05                80
 06/07/2021   18:29:35   (   0.01, -75.34) (   0.60, -72.78)  292.32                80
 06/09/2021   06:48:22   (  -0.02, -75.37) (   0.56, -77.95)  294.33                80