Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 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)
 10/08/2021   06:54:57   (  -0.07, -75.20) (   0.55, -78.00)  319.02                80
 10/09/2021   06:33:18   (  -0.08, -75.20) (  -0.47, -73.41)  203.83                80
 10/10/2021   18:57:34   (   0.07, -75.19) (  -0.72, -78.61)  389.97                80
 10/11/2021   18:35:56   (   0.08, -75.19) (   0.35, -74.03)  133.01                80
 10/13/2021   07:00:02   (  -0.07, -75.19) (   0.81, -79.20)  456.41                80
 10/14/2021   06:38:24   (  -0.08, -75.19) (  -0.21, -74.60)   66.77                80
 10/16/2021   18:41:02   (   0.08, -75.20) (   0.10, -75.22)    3.55                80
 10/19/2021   06:46:10   (  -0.07, -75.22) (   0.04, -75.80)   65.13                80
 10/20/2021   06:24:31   (  -0.08, -75.23) (  -0.98, -71.20)  459.43                80