Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/11/2019   18:32:11   (   0.01, -75.19) (  -0.20, -76.03)   95.87                80
 07/12/2019   18:15:57   (   0.01, -75.20) (   0.84, -71.46)  425.55                80
 07/14/2019   06:37:29   (  -0.02, -75.21) (   0.32, -76.67)  166.89                80
 07/15/2019   06:15:55   (  -0.01, -75.21) (  -0.72, -72.11)  354.76                80
 07/16/2019   18:37:35   (   0.01, -75.22) (  -0.45, -77.35)  241.83                80
 07/17/2019   18:21:20   (   0.01, -75.23) (   0.54, -72.77)  280.34                80
 07/19/2019   06:42:53   (  -0.01, -75.26) (   0.57, -77.99)  310.84                80
 07/20/2019   06:23:57   (  -0.01, -75.27) (  -0.41, -73.41)  211.77                80
 07/21/2019   18:42:58   (   0.01, -75.29) (  -0.75, -78.65)  383.46                80
 07/22/2019   18:26:43   (   0.00, -75.31) (   0.29, -74.09)  139.60                80