Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/01/2019   06:42:21   (  -0.00, -75.19) (   0.58, -77.92)  310.19                80
 10/02/2019   06:20:46   (  -0.01, -75.19) (  -0.43, -73.34)  211.20                80
 10/03/2019   18:42:26   (   0.01, -75.20) (  -0.77, -78.58)  385.54                80
 10/04/2019   18:26:12   (   0.02, -75.21) (   0.29, -74.02)  136.09                80
 10/06/2019   06:47:43   (  -0.02, -75.22) (   0.86, -79.22)  456.18                80
 10/07/2019   06:26:07   (  -0.02, -75.22) (  -0.14, -74.64)   65.85                80
 10/09/2019   18:28:53   (   0.02, -75.25) (   0.01, -75.32)    7.09                80
 10/12/2019   06:34:09   (  -0.02, -75.29) (   0.14, -75.95)   74.90                80
 10/13/2019   06:12:35   (  -0.02, -75.31) (  -0.92, -71.38)  448.23                80