Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/02/2020   06:35:15   (   0.01, -75.19) (   0.04, -75.24)    6.98                80
 12/04/2020   18:35:15   (  -0.02, -75.20) (  -0.16, -75.88)   77.37                80
 12/05/2020   18:18:58   (  -0.02, -75.20) (   0.83, -71.29)  445.63                80
 12/07/2020   06:40:28   (   0.02, -75.20) (   0.28, -76.49)  145.49                80
 12/08/2020   06:18:51   (   0.02, -75.21) (  -0.70, -71.89)  377.57                80
 12/09/2020   18:40:28   (  -0.03, -75.23) (  -0.45, -77.11)  215.12                80
 12/10/2020   18:24:12   (  -0.03, -75.24) (   0.60, -72.54)  308.54                80
 12/12/2020   06:45:41   (   0.03, -75.25) (   0.57, -77.72)  281.23                80
 12/13/2020   06:24:03   (   0.03, -75.26) (  -0.42, -73.13)  242.33                80
 12/14/2020   18:45:41   (  -0.04, -75.28) (  -0.73, -78.35)  350.12                80