Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2019   06:18:15   (  -0.01, -75.20) (  -0.59, -72.72)  282.30                80
 09/12/2019   18:39:55   (   0.01, -75.20) (  -0.59, -77.96)  314.30                80
 09/13/2019   18:23:40   (   0.01, -75.21) (   0.41, -73.39)  207.62                80
 09/15/2019   06:45:11   (  -0.00, -75.22) (   0.77, -78.59)  384.21                80
 09/16/2019   06:23:36   (  -0.00, -75.23) (  -0.29, -74.02)  137.96                80
 09/17/2019   18:45:17   (   0.00, -75.25) (  -0.89, -79.26)  457.78                80
 09/18/2019   18:29:01   (   0.00, -75.26) (   0.11, -74.69)   64.72                80
 09/21/2019   06:31:38   (  -0.00, -75.29) (   0.01, -75.33)    3.95                80
 09/23/2019   18:31:44   (   0.00, -75.32) (  -0.13, -76.00)   77.01                80