Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 6.  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   06:52:59   (  -0.04, -75.20) (   0.81, -79.04)  437.17                80
 03/07/2021   06:31:22   (  -0.04, -75.19) (  -0.20, -74.45)   85.18                80
 03/09/2021   18:36:41   (   0.03, -75.20) (   0.05, -75.07)   14.11                80
 03/12/2021   06:39:12   (  -0.01, -75.21) (   0.08, -75.67)   52.12                80
 03/13/2021   06:17:35   (  -0.01, -75.22) (  -0.93, -71.08)  471.41                80
 03/14/2021   18:39:12   (   0.01, -75.24) (  -0.22, -76.30)  120.98                80
 03/15/2021   18:22:55   (   0.01, -75.25) (   0.79, -71.71)  403.22                80
 03/17/2021   06:44:23   (  -0.01, -75.27) (   0.36, -76.89)  184.98                80
 03/18/2021   06:22:45   (  -0.01, -75.28) (  -0.66, -72.30)  339.19                80
 03/19/2021   18:44:23   (   0.01, -75.30) (  -0.49, -77.52)  252.72                80