Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/23/2021   06:49:23   (   0.02, -75.21) (   0.72, -78.39)  363.25                80
 01/24/2021   06:27:46   (   0.01, -75.20) (  -0.28, -73.80)  159.06                80
 01/25/2021   18:49:23   (  -0.01, -75.20) (  -0.89, -79.02)  436.34                80
 01/26/2021   18:33:07   (  -0.01, -75.20) (   0.17, -74.44)   86.31                80
 01/29/2021   06:32:57   (   0.00, -75.21) (  -0.01, -75.03)   19.38                80
 01/31/2021   18:35:38   (  -0.01, -75.21) (  -0.11, -75.67)   52.35                80
 02/01/2021   18:19:21   (  -0.00, -75.22) (   0.90, -71.08)  471.16                80
 02/03/2021   06:40:49   (   0.00, -75.24) (   0.26, -76.26)  117.28                80
 02/04/2021   06:19:13   (   0.00, -75.25) (  -0.80, -71.69)  406.26                80
 02/05/2021   18:40:50   (  -0.00, -75.25) (  -0.38, -76.90)  187.85                80