Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 09/12/2019   18:39:54   (  -0.00, -75.18) (  -0.64, -77.95)  316.29                80
 09/13/2019   18:23:40   (  -0.00, -75.17) (   0.42, -73.39)  203.94                80
 09/15/2019   06:45:11   (   0.00, -75.17) (   0.76, -78.59)  390.07                80
 09/16/2019   06:23:35   (   0.00, -75.16) (  -0.24, -74.01)  130.40                80
 09/17/2019   18:45:16   (  -0.00, -75.15) (  -0.93, -79.25)  468.22                80
 09/18/2019   18:29:01   (  -0.00, -75.14) (   0.13, -74.69)   52.60                80
 09/21/2019   06:31:37   (   0.00, -75.14) (   0.04, -75.32)   19.90                80
 09/23/2019   18:31:42   (  -0.01, -75.13) (  -0.22, -75.98)   97.37                80
 09/24/2019   18:15:27   (  -0.01, -75.13) (   0.85, -71.42)  423.75                80