Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 10 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/03/2019   18:42:27   (   0.01, -75.20) (  -0.73, -78.59)  385.91                80
 10/04/2019   18:26:11   (   0.01, -75.20) (   0.28, -74.01)  135.56                80
 10/06/2019   06:47:42   (  -0.02, -75.21) (   0.87, -79.22)  456.70                80
 10/07/2019   06:26:07   (  -0.02, -75.21) (  -0.13, -74.64)   65.18                80
 10/09/2019   18:28:53   (   0.02, -75.24) (   0.01, -75.31)    8.50                80
 10/12/2019   06:34:09   (  -0.01, -75.27) (   0.14, -75.94)   76.28                80
 10/13/2019   06:12:33   (  -0.01, -75.29) (  -0.87, -71.36)  446.72                80
 10/14/2019   18:34:14   (   0.01, -75.31) (  -0.26, -76.62)  147.86                80
 10/15/2019   18:17:59   (   0.00, -75.33) (   0.75, -72.04)  375.51                80