Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/11/2021   18:29:43   (  -0.00, -75.17) (   0.36, -73.53)  186.21                80
 02/13/2021   06:51:12   (   0.00, -75.16) (   0.78, -78.72)  404.77                80
 02/14/2021   06:29:34   (  -0.00, -75.16) (  -0.23, -74.13)  117.98                80
 02/15/2021   18:51:12   (   0.00, -75.18) (  -0.96, -79.34)  475.58                80
 02/16/2021   18:34:55   (   0.00, -75.18) (   0.11, -74.77)   47.85                80
 02/19/2021   06:37:26   (   0.00, -75.20) (   0.01, -75.36)   18.29                80
 02/21/2021   18:37:26   (  -0.01, -75.22) (  -0.18, -75.99)   87.26                80
 02/22/2021   18:21:08   (  -0.00, -75.23) (   0.84, -71.40)  436.59                80
 02/24/2021   06:42:37   (  -0.00, -75.25) (   0.30, -76.58)  152.26                80