Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/02/2021   06:47:33   (   0.02, -75.20) (   0.65, -78.06)  326.40                80
 01/03/2021   06:25:56   (   0.01, -75.19) (  -0.35, -73.47)  195.10                80
 01/04/2021   18:47:33   (   0.01, -75.18) (  -0.80, -78.69)  400.53                80
 01/05/2021   18:31:16   (   0.02, -75.18) (   0.25, -74.11)  121.73                80
 01/07/2021   06:52:46   (  -0.02, -75.18) (   0.89, -79.30)  469.33                80
 01/08/2021   06:31:08   (  -0.01, -75.18) (  -0.10, -74.71)   53.13                80
 01/10/2021   18:33:48   (  -0.02, -75.18) (  -0.05, -75.34)   18.26                80
 01/13/2021   06:39:00   (   0.02, -75.19) (   0.20, -75.94)   85.53                80
 01/14/2021   06:17:23   (   0.01, -75.20) (  -0.86, -71.36)  437.52                80
 01/15/2021   18:39:01   (  -0.01, -75.20) (  -0.30, -76.58)  156.23                80