Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2019   06:34:52   (  -0.00, -75.20) (   0.19, -76.01)   93.15                80
 06/24/2019   06:13:18   (   0.00, -75.20) (  -0.86, -71.44)  428.37                80
 06/25/2019   18:34:58   (  -0.01, -75.21) (  -0.36, -76.68)  167.98                80
 06/26/2019   18:18:43   (  -0.01, -75.22) (   0.69, -72.11)  353.88                80
 06/28/2019   06:40:16   (   0.00, -75.23) (   0.45, -77.33)  238.73                80
 06/29/2019   06:18:40   (  -0.00, -75.23) (  -0.53, -72.75)  283.01                80
 06/30/2019   18:40:21   (   0.01, -75.25) (  -0.61, -78.00)  313.27                80
 07/01/2019   18:24:07   (   0.01, -75.26) (   0.43, -73.43)  208.74                80
 07/03/2019   06:45:39   (  -0.01, -75.27) (   0.72, -78.64)  383.36                80
 07/04/2019   06:24:04   (  -0.01, -75.28) (  -0.27, -74.06)  138.79                80
 07/05/2019   18:45:45   (   0.00, -75.30) (  -0.86, -79.31)  456.73                80
 07/06/2019   18:29:30   (  -0.00, -75.31) (   0.12, -74.73)   65.97                80