Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/24/2021   18:49:33   (   0.03, -75.20) (  -0.75, -78.74)  402.32                80
 03/25/2021   18:33:15   (   0.03, -75.21) (   0.27, -74.15)  121.18                80
 03/27/2021   06:54:44   (  -0.02, -75.23) (   0.88, -79.33)  466.88                80
 03/28/2021   06:33:06   (  -0.02, -75.24) (  -0.14, -74.74)   56.61                80
 03/30/2021   18:35:45   (   0.02, -75.25) (  -0.02, -75.36)   13.55                80
 04/02/2021   06:40:57   (  -0.02, -75.29) (   0.10, -75.97)   76.83                80
 04/03/2021   06:19:19   (  -0.02, -75.30) (  -0.92, -71.38)  447.19                80
 04/04/2021   18:40:55   (   0.02, -75.30) (  -0.30, -76.58)  146.07                80
 04/05/2021   18:24:37   (   0.01, -75.32) (   0.73, -71.99)  378.64                80