Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 6 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)
 06/23/2019   06:34:52   (   0.00, -75.20) (   0.20, -76.01)   93.01                80
 06/24/2019   06:13:17   (   0.01, -75.20) (  -0.84, -71.44)  428.52                80
 06/25/2019   18:34:59   (  -0.01, -75.21) (  -0.32, -76.69)  167.96                80
 06/26/2019   18:18:43   (  -0.01, -75.22) (   0.67, -72.11)  353.92                80
 06/28/2019   06:40:15   (   0.01, -75.23) (   0.47, -77.32)  238.54                80
 06/29/2019   06:18:41   (   0.01, -75.24) (  -0.57, -72.76)  283.18                80
 06/30/2019   18:40:21   (   0.01, -75.25) (  -0.63, -77.99)  313.31                80
 07/01/2019   18:24:07   (   0.01, -75.26) (   0.41, -73.43)  208.68                80
 07/03/2019   06:45:39   (  -0.01, -75.27) (   0.74, -78.64)  383.29                80
 07/04/2019   06:24:05   (  -0.00, -75.28) (  -0.30, -74.07)  138.88                80
 07/05/2019   18:45:45   (   0.00, -75.30) (  -0.89, -79.31)  456.78                80