Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 10 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/24/2019   18:44:56   (   0.01, -75.20) (  -0.90, -79.19)  454.92                80
 10/25/2019   18:28:40   (   0.01, -75.20) (   0.11, -74.61)   66.75                80
 10/28/2019   06:28:36   (  -0.00, -75.21) (   0.03, -75.24)    5.32                80
 10/30/2019   18:31:22   (   0.01, -75.23) (  -0.12, -75.92)   77.50                80
 10/31/2019   18:15:06   (   0.02, -75.24) (   0.89, -71.34)  444.56                80
 11/02/2019   06:36:38   (  -0.01, -75.25) (   0.27, -76.55)  147.18                80
 11/03/2019   06:15:02   (  -0.02, -75.27) (  -0.74, -71.97)  375.36                80
 11/04/2019   18:39:22   (   0.01, -75.29) (  -0.41, -77.21)  218.61                80
 11/05/2019   18:17:47   (   0.02, -75.31) (   0.61, -72.64)  304.49                80