Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/09/2021   18:36:42   (   0.04, -75.20) (   0.07, -75.08)   13.76                80
 03/12/2021   06:39:12   (  -0.02, -75.20) (   0.11, -75.66)   53.15                80
 03/13/2021   06:17:35   (  -0.02, -75.21) (  -0.97, -71.08)  470.36                80
 03/14/2021   18:39:11   (   0.02, -75.22) (  -0.25, -76.29)  122.09                80
 03/15/2021   18:22:55   (   0.02, -75.24) (   0.83, -71.71)  402.01                80
 03/17/2021   06:44:22   (  -0.02, -75.25) (   0.37, -76.88)  186.58                80
 03/18/2021   06:22:46   (  -0.02, -75.26) (  -0.71, -72.31)  337.47                80
 03/19/2021   18:44:22   (   0.02, -75.29) (  -0.49, -77.52)  254.47                80
 03/20/2021   18:28:05   (   0.02, -75.30) (   0.53, -72.93)  270.08                80
 03/22/2021   06:49:33   (  -0.01, -75.33) (   0.62, -78.11)  317.53                80