Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/25/2021   18:33:15   (   0.04, -75.21) (   0.25, -74.14)  121.14                80
 03/27/2021   06:54:43   (  -0.03, -75.23) (   0.91, -79.32)  467.03                80
 03/28/2021   06:33:06   (  -0.03, -75.24) (  -0.11, -74.74)   56.57                80
 03/30/2021   18:35:46   (   0.03, -75.25) (   0.02, -75.37)   13.38                80
 04/02/2021   06:40:56   (  -0.03, -75.29) (   0.12, -75.96)   76.68                80
 04/03/2021   06:19:19   (  -0.03, -75.30) (  -0.90, -71.37)  447.29                80
 04/04/2021   18:40:55   (   0.02, -75.31) (  -0.26, -76.59)  145.78                80
 04/05/2021   18:24:38   (   0.02, -75.32) (   0.76, -72.00)  378.93                80
 04/07/2021   06:46:06   (  -0.01, -75.37) (   0.41, -77.18)  206.87                80