Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 10 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/22/2021   18:27:08   (   0.03, -75.20) (   0.82, -71.80)  388.21                80
 10/24/2021   06:51:13   (  -0.02, -75.20) (   0.38, -76.96)  200.63                80
 10/25/2021   06:29:35   (  -0.03, -75.21) (  -0.64, -72.37)  323.05                80
 10/26/2021   18:53:51   (   0.02, -75.22) (  -0.49, -77.58)  269.18                80
 10/27/2021   18:32:13   (   0.03, -75.22) (   0.53, -72.99)  254.85                80
 10/29/2021   06:56:19   (  -0.02, -75.23) (   0.61, -78.16)  333.09                80
 10/30/2021   06:34:40   (  -0.03, -75.24) (  -0.41, -73.56)  191.08                80
 10/31/2021   18:58:56   (   0.02, -75.25) (  -0.77, -78.77)  400.32                80
 11/01/2021   18:37:17   (   0.02, -75.27) (   0.25, -74.17)  124.44                80
 11/03/2021   07:01:24   (  -0.01, -75.29) (   0.89, -79.34)  462.03                80
 11/04/2021   06:39:45   (  -0.01, -75.30) (  -0.13, -74.75)   62.79                80