Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/09/2021   06:39:08   (  -0.01, -75.17) (  -0.01, -75.28)   11.77                80
 05/11/2021   18:41:46   (   0.01, -75.20) (  -0.17, -75.89)   79.19                80
 05/12/2021   18:20:08   (   0.02, -75.21) (   0.87, -71.31)  444.89                80
 05/14/2021   06:44:16   (  -0.01, -75.22) (   0.28, -76.49)  144.42                80
 05/15/2021   06:22:39   (  -0.01, -75.23) (  -0.76, -71.90)  379.73                80
 05/16/2021   18:46:55   (   0.01, -75.26) (  -0.40, -77.11)  211.23                80
 05/17/2021   18:25:18   (   0.01, -75.27) (   0.64, -72.53)  313.28                80
 05/19/2021   06:49:25   (  -0.00, -75.29) (   0.56, -77.70)  275.19                80
 05/20/2021   06:27:48   (  -0.00, -75.30) (  -0.48, -73.11)  249.61                80
 05/21/2021   18:49:24   (   0.00, -75.34) (  -0.68, -78.32)  340.52                80