Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 11 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 11/12/2021   18:31:07   (  -0.00, -75.19) (   0.71, -71.93)  371.50                80
 11/14/2021   06:52:33   (   0.01, -75.20) (   0.43, -77.10)  216.43                80
 11/15/2021   06:30:55   (   0.01, -75.21) (  -0.60, -72.51)  308.00                80
 11/16/2021   18:55:10   (  -0.02, -75.22) (  -0.56, -77.71)  283.26                80
 11/17/2021   18:33:31   (  -0.02, -75.23) (   0.48, -73.12)  241.70                80
 11/19/2021   06:57:37   (   0.03, -75.25) (   0.72, -78.28)  344.96                80
 11/20/2021   06:35:58   (   0.02, -75.27) (  -0.31, -73.68)  179.97                80
 11/21/2021   19:00:13   (  -0.03, -75.29) (  -0.84, -78.89)  410.85                80
 11/22/2021   18:38:35   (  -0.03, -75.30) (   0.20, -74.30)  114.36                80
 11/24/2021   07:02:41   (   0.03, -75.33) (   0.95, -79.47)  471.61                80
 11/25/2021   06:41:03   (   0.03, -75.34) (  -0.09, -74.88)   53.70                80