Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 5 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/30/2019   18:29:37   (   0.01, -75.20) (   0.09, -74.71)   54.92                80
 06/02/2019   06:32:15   (  -0.01, -75.20) (  -0.01, -75.36)   18.08                80
 06/04/2019   18:32:21   (   0.02, -75.21) (  -0.18, -76.03)   93.59                80
 06/05/2019   18:16:06   (   0.02, -75.21) (   0.87, -71.46)  427.78                80
 06/07/2019   06:37:37   (  -0.02, -75.21) (   0.32, -76.66)  165.45                80
 06/08/2019   06:16:03   (  -0.02, -75.22) (  -0.73, -72.10)  356.18                80
 06/09/2019   18:37:44   (   0.02, -75.24) (  -0.43, -77.34)  239.91                80
 06/10/2019   18:21:29   (   0.02, -75.25) (   0.55, -72.77)  282.28                80
 06/12/2019   06:43:01   (  -0.02, -75.26) (   0.57, -77.98)  309.61                80