Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 10 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2020   06:28:39   (   0.01, -75.18) (  -0.14, -74.47)   80.04                80
 10/23/2020   18:34:01   (  -0.01, -75.18) (  -0.01, -75.11)    7.86                80
 10/26/2020   06:36:33   (   0.00, -75.19) (   0.12, -75.73)   60.51                80
 10/27/2020   06:14:57   (   0.00, -75.20) (  -0.91, -71.14)  462.71                80
 10/28/2020   18:36:35   (  -0.00, -75.22) (  -0.26, -76.37)  130.42                80
 10/29/2020   18:20:19   (  -0.00, -75.24) (   0.77, -71.79)  393.37                80
 10/31/2020   06:41:48   (   0.00, -75.26) (   0.37, -76.98)  195.90                80
 11/01/2020   06:20:12   (   0.00, -75.27) (  -0.66, -72.40)  328.02                80
 11/02/2020   18:41:50   (  -0.00, -75.30) (  -0.50, -77.62)  264.45                80
 11/03/2020   18:25:33   (  -0.00, -75.32) (   0.53, -73.04)  259.72                80