Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/06/2021   06:52:58   (  -0.03, -75.20) (   0.85, -79.03)  436.67                80
 03/07/2021   06:31:22   (  -0.03, -75.20) (  -0.23, -74.45)   85.91                80
 03/09/2021   18:36:42   (   0.01, -75.21) (   0.07, -75.08)   15.60                80
 03/12/2021   06:39:12   (  -0.00, -75.22) (   0.12, -75.66)   50.42                80
 03/13/2021   06:17:35   (  -0.00, -75.23) (  -0.95, -71.08)  473.30                80
 03/14/2021   18:39:12   (   0.00, -75.25) (  -0.26, -76.29)  118.97                80
 03/15/2021   18:22:55   (   0.00, -75.27) (   0.82, -71.71)  405.45                80
 03/17/2021   06:44:23   (  -0.00, -75.29) (   0.34, -76.90)  182.39                80
 03/18/2021   06:22:46   (  -0.00, -75.31) (  -0.67, -72.31)  341.97                80