Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2020 12 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/07/2020   06:40:28   (  -0.00, -75.17) (   0.27, -76.49)  149.47                80
 12/08/2020   06:18:51   (   0.00, -75.16) (  -0.72, -71.89)  372.18                80
 12/09/2020   18:40:28   (  -0.00, -75.16) (  -0.44, -77.11)  222.70                80
 12/10/2020   18:24:12   (  -0.00, -75.16) (   0.61, -72.53)  299.44                80
 12/12/2020   06:45:41   (   0.00, -75.15) (   0.56, -77.72)  292.92                80
 12/13/2020   06:24:04   (   0.00, -75.14) (  -0.43, -73.13)  229.14                80
 12/14/2020   18:45:41   (  -0.00, -75.14) (  -0.72, -78.35)  365.51                80
 12/15/2020   18:29:24   (  -0.00, -75.14) (   0.33, -73.77)  157.08                80
 12/17/2020   06:50:54   (   0.01, -75.14) (   0.84, -78.96)  434.02                80
 12/18/2020   06:29:16   (   0.01, -75.15) (  -0.15, -74.36)   88.82                80
 12/20/2020   18:34:36   (  -0.01, -75.17) (  -0.00, -75.00)   18.99                80