Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/11/2019   06:48:30   (  -0.00, -75.19) (   0.89, -79.25)  462.59                80
 05/12/2019   06:26:55   (  -0.00, -75.19) (  -0.09, -74.67)   58.38                80
 05/14/2019   18:29:41   (   0.00, -75.20) (  -0.04, -75.35)   17.65                80
 05/17/2019   06:34:59   (   0.00, -75.22) (   0.16, -76.00)   88.19                80
 05/18/2019   06:13:25   (   0.00, -75.23) (  -0.88, -71.43)  433.75                80
 05/19/2019   18:35:05   (  -0.00, -75.25) (  -0.35, -76.66)  162.34                80
 05/20/2019   18:18:51   (  -0.01, -75.26) (   0.68, -72.10)  360.02                80
 05/22/2019   06:40:23   (   0.01, -75.28) (   0.46, -77.31)  231.05                80
 05/23/2019   06:18:48   (   0.01, -75.30) (  -0.57, -72.74)  291.49                80
 05/24/2019   18:40:30   (  -0.01, -75.32) (  -0.60, -77.99)  303.75                80