Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 6 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/04/2021   06:43:13   (  -0.01, -75.23) (   0.33, -76.73)  171.26                80
 06/05/2021   06:26:55   (  -0.01, -75.23) (  -0.71, -72.14)  351.82                80
 06/06/2021   18:45:52   (   0.02, -75.24) (  -0.47, -77.35)  241.67                80
 06/07/2021   18:29:34   (   0.02, -75.24) (   0.57, -72.77)  281.73                80
 06/09/2021   06:48:22   (  -0.03, -75.24) (   0.59, -77.94)  308.20                80
 06/10/2021   06:32:04   (  -0.02, -75.24) (  -0.46, -73.36)  215.31                80
 06/11/2021   18:51:00   (   0.03, -75.25) (  -0.73, -78.56)  377.78                80
 06/12/2021   18:34:43   (   0.03, -75.26) (   0.32, -73.98)  146.04                80
 06/14/2021   06:53:30   (  -0.03, -75.27) (   0.83, -79.15)  443.06                80
 06/15/2021   06:37:13   (  -0.03, -75.27) (  -0.21, -74.57)   81.05                80
 06/17/2021   18:39:52   (   0.03, -75.30) (   0.07, -75.19)   13.39                80