Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/29/2021   06:32:58   (   0.01, -75.21) (  -0.05, -75.04)   19.77                80
 01/31/2021   18:35:38   (  -0.00, -75.22) (  -0.12, -75.67)   51.36                80
 02/01/2021   18:19:21   (   0.00, -75.23) (   0.94, -71.09)  472.20                80
 02/03/2021   06:40:50   (  -0.00, -75.25) (   0.21, -76.27)  116.59                80
 02/04/2021   06:19:12   (  -0.00, -75.25) (  -0.79, -71.68)  407.00                80
 02/05/2021   18:40:49   (  -0.00, -75.27) (  -0.39, -76.90)  186.23                80
 02/06/2021   18:24:33   (  -0.01, -75.28) (   0.67, -72.32)  337.86                80
 02/08/2021   06:46:01   (   0.01, -75.31) (   0.48, -77.50)  249.96                80
 02/09/2021   06:24:24   (   0.00, -75.32) (  -0.53, -72.91)  274.04                80
 02/10/2021   18:46:01   (  -0.00, -75.34) (  -0.65, -78.13)  318.88                80
 02/11/2021   18:29:45   (  -0.00, -75.36) (   0.41, -73.55)  205.99                80