Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 6 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/05/2021   06:26:56   (  -0.01, -75.23) (  -0.73, -72.15)  351.78                80
 06/06/2021   18:45:52   (   0.02, -75.23) (  -0.46, -77.36)  241.78                80
 06/07/2021   18:29:35   (   0.02, -75.24) (   0.59, -72.77)  281.56                80
 06/09/2021   06:48:22   (  -0.03, -75.24) (   0.56, -77.95)  308.47                80
 06/10/2021   06:32:03   (  -0.02, -75.24) (  -0.42, -73.35)  215.02                80
 06/11/2021   18:51:01   (   0.03, -75.25) (  -0.70, -78.57)  378.13                80
 06/12/2021   18:34:43   (   0.03, -75.25) (   0.34, -73.98)  145.66                80
 06/14/2021   06:53:30   (  -0.03, -75.26) (   0.86, -79.15)  443.57                80
 06/15/2021   06:37:12   (  -0.03, -75.27) (  -0.18, -74.56)   80.46                80
 06/17/2021   18:39:51   (   0.03, -75.30) (   0.05, -75.18)   12.61                80