Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 10 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)
 10/18/2019   06:17:55   (   0.01, -75.20) (  -0.59, -72.66)  289.99                80
 10/19/2019   18:39:35   (  -0.01, -75.20) (  -0.60, -77.90)  306.81                80
 10/20/2019   18:23:19   (  -0.00, -75.20) (   0.41, -73.32)  214.33                80
 10/22/2019   06:44:51   (   0.00, -75.20) (   0.74, -78.53)  379.07                80
 10/23/2019   06:23:15   (  -0.00, -75.20) (  -0.26, -73.95)  142.25                80
 10/24/2019   18:44:55   (   0.00, -75.21) (  -0.91, -79.19)  453.76                80
 10/25/2019   18:26:01   (  -0.00, -75.22) (   0.16, -74.62)   68.33                80
 10/28/2019   06:28:37   (   0.02, -75.24) (  -0.00, -75.25)    3.17                80
 10/30/2019   18:31:22   (  -0.03, -75.27) (  -0.15, -75.92)   73.42                80
 10/31/2019   18:12:26   (  -0.02, -75.28) (   0.86, -71.34)  449.27                80