Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/22/2019   18:26:42   (  -0.01, -75.20) (   0.26, -74.07)  128.64                80
 07/24/2019   06:48:14   (   0.01, -75.20) (   0.91, -79.28)  464.77                80
 07/25/2019   06:26:39   (   0.01, -75.20) (  -0.08, -74.70)   56.71                80
 07/27/2019   18:29:25   (  -0.01, -75.22) (  -0.02, -75.38)   18.18                80
 07/30/2019   06:34:41   (   0.01, -75.23) (   0.21, -76.01)   89.29                80
 07/31/2019   06:13:07   (   0.01, -75.24) (  -0.84, -71.44)  432.40                80
 08/01/2019   18:34:47   (  -0.01, -75.25) (  -0.30, -76.69)  163.48                80
 08/02/2019   18:18:32   (  -0.01, -75.26) (   0.69, -72.11)  358.62                80
 08/04/2019   06:40:04   (   0.01, -75.28) (   0.49, -77.32)  233.31                80