Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2019 9 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)
 09/24/2019   18:15:28   (   0.00, -75.20) (   0.83, -71.41)  431.87                80
 09/26/2019   06:36:59   (   0.00, -75.19) (   0.33, -76.61)  162.45                80
 09/27/2019   06:15:24   (   0.00, -75.19) (  -0.73, -72.05)  358.80                80
 09/28/2019   18:37:05   (  -0.00, -75.20) (  -0.47, -77.28)  237.09                80
 09/29/2019   18:20:49   (  -0.00, -75.21) (   0.54, -72.71)  284.65                80
 10/01/2019   06:42:20   (   0.00, -75.21) (   0.62, -77.91)  308.33                80
 10/02/2019   06:20:46   (   0.00, -75.22) (  -0.44, -73.35)  213.63                80
 10/03/2019   18:42:26   (   0.00, -75.24) (  -0.75, -78.59)  381.46                80
 10/04/2019   18:26:11   (   0.00, -75.25) (   0.26, -74.01)  140.88                80
 10/06/2019   06:47:42   (  -0.00, -75.26) (   0.90, -79.22)  451.03                80
 10/07/2019   06:26:08   (   0.00, -75.27) (  -0.16, -74.65)   71.63                80