Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2023 12 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/10/2023   19:26:36   (   0.02, -75.22) (  -0.51, -77.54)  264.59                80
 12/11/2023   19:10:50   (   0.01, -75.22) (   0.53, -73.07)  246.00                80
 12/13/2023   07:33:03   (  -0.01, -75.22) (   0.72, -78.41)  363.26                80
 12/14/2023   07:11:57   (  -0.01, -75.23) (  -0.32, -73.94)  147.23                80
 12/15/2023   19:34:19   (   0.01, -75.24) (  -0.94, -79.31)  465.44                80
 12/16/2023   19:18:33   (   0.00, -75.24) (   0.11, -74.85)   45.43                80
 12/19/2023   07:22:19   (  -0.01, -75.27) (   0.08, -75.72)   51.41                80
 12/20/2023   07:01:12   (  -0.00, -75.28) (  -0.91, -71.24)  460.00                80
 12/21/2023   19:23:35   (   0.00, -75.30) (  -0.29, -76.63)  151.08                80
 12/22/2023   19:07:48   (   0.00, -75.32) (   0.70, -72.15)  360.86                80