Simultaneous Nadir Overpasses (SNOs) between GOES-16 and FY3D
TLE Epoch: 2023 9 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)
 09/10/2023   19:06:27   (  -0.05, -75.23) (   0.37, -73.44)  204.46                80
 09/12/2023   07:28:45   (   0.04, -75.23) (   0.85, -78.80)  407.64                80
 09/13/2023   07:07:42   (   0.04, -75.24) (  -0.19, -74.35)  101.69                80
 09/15/2023   19:14:26   (  -0.03, -75.28) (  -0.02, -75.30)    2.51                80
 09/18/2023   07:18:20   (   0.03, -75.31) (   0.24, -76.20)  102.12                80
 09/19/2023   06:57:16   (   0.03, -75.32) (  -0.81, -71.75)  408.05                80
 09/20/2023   19:19:43   (  -0.03, -75.35) (  -0.42, -77.15)  204.57                80
 09/21/2023   19:03:59   (  -0.03, -75.37) (   0.57, -72.69)  305.66                80
 09/23/2023   07:26:17   (   0.02, -75.39) (   0.64, -78.05)  304.63                80