Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 1 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/18/2020   18:16:43   (  -0.05, -75.20) (   0.59, -72.30)  329.92                80
 01/20/2020   06:40:53   (   0.06, -75.20) (   0.59, -77.50)  262.61                80
 01/21/2020   06:19:17   (   0.06, -75.20) (  -0.44, -72.92)  259.32                80
 01/22/2020   18:43:38   (  -0.07, -75.21) (  -0.70, -78.16)  335.46                80
 01/23/2020   18:22:01   (  -0.07, -75.22) (   0.27, -73.58)  186.94                80
 01/25/2020   06:46:13   (   0.08, -75.23) (   0.85, -78.78)  404.30                80
 01/26/2020   06:24:37   (   0.07, -75.24) (  -0.19, -74.21)  118.45                80
 01/27/2020   18:48:56   (  -0.08, -75.27) (  -1.02, -79.44)  475.10                80
 01/28/2020   18:27:21   (  -0.08, -75.29) (   0.02, -74.86)   48.15                80
 01/31/2020   06:32:36   (   0.09, -75.33) (   0.12, -75.48)   17.94                80