Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 10 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/01/2023   21:01:37   (   0.00,-104.69) (   0.61,-101.94)  313.34                80
 10/03/2023   09:23:55   (  -0.00,-104.73) (   0.58,-107.31)  294.59                80
 10/04/2023   09:02:51   (  -0.00,-104.73) (  -0.44,-102.85)  214.20                80
 10/05/2023   21:25:17   (   0.01,-104.70) (  -0.78,-108.25)  404.55                80
 10/06/2023   21:09:32   (   0.01,-104.70) (   0.19,-103.78)  104.49                80
 10/09/2023   09:10:45   (  -0.01,-104.74) (  -0.04,-104.69)    6.42                80
 10/11/2023   21:14:46   (   0.01,-104.72) (  -0.17,-105.62)  102.65                80
 10/12/2023   20:59:01   (   0.01,-104.72) (   0.81,-101.15)  407.03                80
 10/14/2023   09:21:19   (  -0.00,-104.77) (   0.36,-106.52)  199.60                80