Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 2 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/08/2021   06:46:01   (   0.01, -75.18) (   0.50, -77.49)  263.31                80
 02/09/2021   06:24:23   (   0.01, -75.17) (  -0.50, -72.90)  258.71                80
 02/10/2021   18:46:00   (  -0.00, -75.18) (  -0.68, -78.12)  335.74                80
 02/11/2021   18:29:44   (  -0.00, -75.18) (   0.38, -73.54)  187.10                80
 02/13/2021   06:51:11   (  -0.00, -75.18) (   0.81, -78.71)  403.33                80
 02/14/2021   06:29:35   (  -0.00, -75.18) (  -0.25, -74.13)  119.90                80
 02/15/2021   18:51:12   (   0.00, -75.20) (  -0.93, -79.35)  473.11                80
 02/16/2021   18:34:55   (   0.00, -75.21) (   0.08, -74.76)   50.79                80
 02/19/2021   06:37:26   (  -0.01, -75.24) (  -0.00, -75.37)   14.66                80