Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 5 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/19/2021   06:49:25   (  -0.01, -75.19) (   0.54, -77.70)  285.08                80
 05/20/2021   06:27:48   (  -0.02, -75.19) (  -0.50, -73.11)  237.39                80
 05/21/2021   18:49:24   (   0.02, -75.18) (  -0.67, -78.32)  357.33                80
 05/22/2021   18:33:07   (   0.02, -75.18) (   0.37, -73.73)  165.53                80
 05/24/2021   06:54:34   (  -0.02, -75.18) (   0.82, -78.91)  424.54                80
 05/25/2021   06:32:57   (  -0.02, -75.18) (  -0.22, -74.32)   98.38                80
 05/26/2021   18:54:33   (   0.03, -75.18) (  -0.95, -79.53)  495.97                80
 05/27/2021   18:38:15   (   0.03, -75.18) (   0.09, -74.94)   27.09                80
 05/30/2021   06:38:05   (  -0.03, -75.19) (   0.06, -75.53)   39.00                80
 05/31/2021   06:21:48   (  -0.03, -75.19) (  -0.98, -70.94)  484.71                80
 06/01/2021   18:40:44   (   0.03, -75.20) (  -0.19, -76.15)  108.19                80