Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2021 1 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/19/2021   06:22:35   (  -0.02, -75.21) (  -0.58, -72.58)  299.51                80
 01/20/2021   18:44:12   (   0.01, -75.23) (  -0.58, -77.80)  293.42                80
 01/21/2021   18:27:54   (  -0.02, -75.24) (   0.42, -73.21)  231.21                80
 01/23/2021   06:49:24   (   0.01, -75.26) (   0.70, -78.40)  357.59                80
 01/24/2021   06:27:46   (   0.01, -75.27) (  -0.31, -73.81)  166.17                80
 01/25/2021   18:49:24   (  -0.01, -75.29) (  -0.87, -79.03)  426.78                80
 01/26/2021   18:33:07   (  -0.00, -75.30) (   0.20, -74.45)   97.35                80
 01/28/2021   06:54:35   (   0.00, -75.33) (   0.97, -79.63)  490.52                80
 01/29/2021   06:32:59   (  -0.00, -75.34) (  -0.09, -75.05)   33.77                80
 01/31/2021   18:35:39   (   0.00, -75.39) (  -0.08, -75.68)   33.90                80
 02/01/2021   18:19:22   (  -0.00, -75.41) (   0.98, -71.10)  491.11                80