Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 3 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 03/12/2021   06:39:12   (  -0.03, -75.20) (   0.07, -75.67)   53.47                80
 03/13/2021   06:17:35   (  -0.03, -75.20) (  -0.95, -71.08)  469.84                80
 03/14/2021   18:39:12   (   0.02, -75.22) (  -0.21, -76.30)  122.73                80
 03/15/2021   18:22:55   (   0.02, -75.23) (   0.81, -71.71)  401.22                80
 03/17/2021   06:44:23   (  -0.02, -75.24) (   0.34, -76.89)  187.55                80
 03/18/2021   06:22:45   (  -0.02, -75.26) (  -0.68, -72.30)  336.36                80
 03/19/2021   18:44:23   (   0.02, -75.28) (  -0.46, -77.52)  255.75                80
 03/20/2021   18:28:05   (   0.02, -75.29) (   0.56, -72.94)  268.67                80
 03/22/2021   06:49:34   (  -0.01, -75.31) (   0.60, -78.12)  319.14                80
 03/23/2021   06:27:56   (  -0.01, -75.33) (  -0.42, -73.53)  205.24                80