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

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2020   06:50:53   (  -0.00, -75.15) (   0.87, -78.94)  432.84                80
 12/18/2020   06:29:16   (  -0.00, -75.16) (  -0.18, -74.37)   90.21                80
 12/20/2020   18:34:36   (  -0.00, -75.19) (   0.03, -75.00)   21.29                80
 12/23/2020   06:37:09   (   0.01, -75.22) (   0.08, -75.60)   43.98                80
 12/24/2020   06:15:33   (   0.01, -75.23) (  -0.97, -71.03)  480.19                80
 12/25/2020   18:37:09   (  -0.00, -75.26) (  -0.23, -76.24)  111.24                80
 12/26/2020   18:20:52   (  -0.00, -75.28) (   0.82, -71.66)  413.30                80
 12/28/2020   06:42:22   (   0.00, -75.31) (   0.34, -76.84)  175.02                80
 12/29/2020   06:20:44   (   0.01, -75.32) (  -0.65, -72.25)  349.51                80