Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/06/2019   06:43:06   (   0.00, -75.20) (   0.61, -77.94)  311.65                80
 05/07/2019   06:21:32   (   0.00, -75.20) (  -0.43, -73.37)  208.72                80
 05/08/2019   18:43:12   (  -0.00, -75.20) (  -0.79, -78.61)  389.51                80
 05/09/2019   18:26:57   (   0.00, -75.19) (   0.24, -74.04)  130.96                80
 05/11/2019   06:48:30   (  -0.00, -75.19) (   0.92, -79.25)  463.51                80
 05/12/2019   06:26:55   (  -0.00, -75.18) (  -0.12, -74.68)   57.19                80
 05/14/2019   18:29:42   (   0.00, -75.19) (  -0.01, -75.36)   19.03                80
 05/17/2019   06:34:59   (  -0.01, -75.21) (   0.19, -75.99)   90.33                80
 05/18/2019   06:13:24   (  -0.01, -75.21) (  -0.84, -71.43)  431.34                80
 05/19/2019   18:35:06   (   0.02, -75.23) (  -0.32, -76.67)  164.90                80