Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/02/2021   06:26:11   (  -0.03, -75.21) (  -0.50, -73.23)  225.95                80
 03/03/2021   18:47:48   (   0.03, -75.21) (  -0.68, -78.44)  367.79                80
 03/04/2021   18:31:31   (   0.03, -75.22) (   0.34, -73.85)  155.76                80
 03/06/2021   06:52:59   (  -0.03, -75.23) (   0.80, -79.04)  433.09                80
 03/07/2021   06:31:22   (  -0.02, -75.24) (  -0.21, -74.45)   90.44                80
 03/09/2021   18:36:42   (  -0.00, -75.26) (   0.06, -75.08)   21.81                80
 03/12/2021   06:39:12   (   0.00, -75.31) (   0.07, -75.67)   41.02                80
 03/13/2021   06:17:35   (   0.00, -75.33) (  -0.94, -71.08)  483.66                80
 03/14/2021   18:39:12   (  -0.00, -75.35) (  -0.21, -76.30)  107.85                80
 03/15/2021   18:22:55   (  -0.00, -75.38) (   0.81, -71.71)  417.54                80