Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2023 12 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/06/2023   19:03:06   (   0.01, -75.21) (   0.91, -71.28)  447.64                80
 12/08/2023   07:25:21   (  -0.01, -75.21) (   0.30, -76.63)  161.94                80
 12/09/2023   07:04:13   (  -0.01, -75.21) (  -0.69, -72.15)  348.31                80
 12/10/2023   19:26:36   (   0.01, -75.21) (  -0.52, -77.54)  264.82                80
 12/11/2023   19:10:49   (   0.00, -75.22) (   0.47, -73.06)  245.66                80
 12/13/2023   07:33:03   (   0.00, -75.22) (   0.72, -78.41)  363.19                80
 12/14/2023   07:11:56   (   0.00, -75.22) (  -0.27, -73.93)  147.14                80
 12/15/2023   19:34:19   (  -0.00, -75.23) (  -0.93, -79.31)  466.07                80
 12/16/2023   19:18:32   (  -0.01, -75.23) (   0.07, -74.84)   44.69                80
 12/19/2023   07:22:18   (   0.00, -75.26) (   0.11, -75.71)   51.79                80