Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 7 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/20/2019   06:21:17   (  -0.01, -75.20) (  -0.42, -73.41)  204.10                80
 07/21/2019   18:42:57   (   0.02, -75.19) (  -0.75, -78.65)  393.34                80
 07/22/2019   18:26:42   (   0.02, -75.20) (   0.24, -74.07)  128.09                80
 07/24/2019   06:48:15   (  -0.02, -75.21) (   0.87, -79.29)  464.63                80
 07/25/2019   06:26:40   (  -0.02, -75.21) (  -0.12, -74.71)   56.96                80
 07/27/2019   18:29:25   (   0.02, -75.22) (   0.01, -75.39)   18.34                80
 07/30/2019   06:32:02   (  -0.03, -75.25) (   0.18, -76.02)   88.71                80
 07/31/2019   06:15:48   (  -0.03, -75.25) (  -0.87, -71.45)  433.17                80
 08/01/2019   18:34:48   (   0.03, -75.26) (  -0.27, -76.70)  163.13                80
 08/02/2019   18:18:33   (   0.03, -75.27) (   0.72, -72.12)  359.19                80