Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 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)
 05/22/2019   06:40:22   (  -0.00, -75.18) (   0.48, -77.30)  242.00                80
 05/23/2019   06:18:48   (  -0.00, -75.18) (  -0.56, -72.73)  279.20                80
 05/24/2019   18:40:29   (   0.01, -75.20) (  -0.61, -77.98)  317.22                80
 05/25/2019   18:24:14   (   0.01, -75.20) (   0.43, -73.41)  204.59                80
 05/27/2019   06:45:46   (  -0.01, -75.22) (   0.77, -78.61)  387.68                80
 05/28/2019   06:24:11   (  -0.01, -75.23) (  -0.27, -74.05)  134.39                80
 05/29/2019   18:45:53   (   0.02, -75.25) (  -0.90, -79.29)  461.00                80
 05/30/2019   18:29:38   (   0.02, -75.27) (   0.14, -74.73)   61.54                80
 06/02/2019   06:32:15   (  -0.02, -75.30) (   0.02, -75.36)    7.81                80
 06/04/2019   18:32:22   (   0.03, -75.35) (  -0.15, -76.04)   79.70                80