Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/14/2021   06:29:35   (  -0.01, -75.12) (  -0.26, -74.14)  113.48                80
 02/15/2021   18:51:12   (   0.01, -75.14) (  -0.92, -79.35)  479.61                80
 02/16/2021   18:34:55   (   0.01, -75.15) (   0.08, -74.76)   44.15                80
 02/19/2021   06:37:26   (  -0.02, -75.17) (   0.04, -75.35)   21.50                80
 02/21/2021   18:37:26   (   0.03, -75.20) (  -0.16, -75.99)   90.10                80
 02/22/2021   18:21:10   (   0.03, -75.22) (   0.91, -71.42)  434.01                80
 02/24/2021   06:42:37   (  -0.03, -75.24) (   0.29, -76.59)  154.58                80
 02/25/2021   06:21:01   (  -0.04, -75.25) (  -0.78, -72.01)  369.59                80
 02/26/2021   18:42:38   (   0.04, -75.28) (  -0.40, -77.23)  222.35                80
 02/27/2021   18:26:21   (   0.04, -75.30) (   0.62, -72.64)  302.47                80