Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 10 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/02/2019   06:20:46   (   0.00, -75.19) (  -0.43, -73.34)  211.24                80
 10/03/2019   18:42:26   (   0.00, -75.20) (  -0.76, -78.58)  385.81                80
 10/04/2019   18:26:11   (   0.00, -75.20) (   0.24, -74.00)  135.78                80
 10/06/2019   06:47:42   (  -0.01, -75.21) (   0.91, -79.21)  456.55                80
 10/07/2019   06:26:07   (  -0.01, -75.21) (  -0.15, -74.64)   65.33                80
 10/09/2019   18:28:53   (   0.01, -75.24) (   0.02, -75.32)    8.76                80
 10/12/2019   06:34:09   (  -0.01, -75.28) (   0.13, -75.95)   76.24                80
 10/13/2019   06:12:34   (  -0.01, -75.29) (  -0.87, -71.37)  446.73                80
 10/14/2019   18:34:15   (   0.01, -75.32) (  -0.25, -76.62)  147.79                80
 10/15/2019   18:17:59   (   0.01, -75.34) (   0.76, -72.04)  375.48                80