Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 8 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/15/2019   06:31:55   (  -0.04, -75.16) (  -0.02, -75.36)   23.10                80
 08/16/2019   06:10:19   (  -0.04, -75.17) (  -1.01, -70.78)  499.53                80
 08/17/2019   18:32:00   (   0.05, -75.20) (  -0.14, -76.03)   94.09                80
 08/18/2019   18:15:45   (   0.05, -75.22) (   0.91, -71.46)  429.02                80
 08/20/2019   06:37:18   (  -0.05, -75.25) (   0.25, -76.67)  162.24                80
 08/21/2019   06:15:42   (  -0.05, -75.27) (  -0.74, -72.09)  361.04                80
 08/22/2019   18:37:22   (   0.05, -75.30) (  -0.41, -77.34)  231.99                80
 08/23/2019   18:21:08   (   0.05, -75.33) (   0.64, -72.77)  291.50                80
 08/25/2019   06:42:40   (  -0.06, -75.36) (   0.52, -77.98)  299.18                80
 08/26/2019   06:21:06   (  -0.06, -75.38) (  -0.53, -73.42)  224.23                80
 08/27/2019   18:42:45   (   0.07, -75.42) (  -0.68, -78.65)  368.84                80
 08/28/2019   18:26:31   (   0.07, -75.44) (   0.37, -74.08)  154.93                80