Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 7 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2023   20:51:56   (   0.02,-104.72) (   0.94,-100.78)  449.87                80
 07/14/2023   09:14:16   (  -0.02,-104.74) (   0.33,-106.15)  161.04                80
 07/15/2023   08:53:13   (  -0.01,-104.74) (  -0.70,-101.70)  346.63                80
 07/16/2023   21:15:42   (   0.01,-104.72) (  -0.55,-107.10)  272.66                80
 07/17/2023   20:59:59   (   0.01,-104.72) (   0.48,-102.65)  235.37                80
 07/19/2023   09:22:21   (  -0.01,-104.75) (   0.72,-108.03)  374.73                80
 07/20/2023   09:01:17   (  -0.01,-104.75) (  -0.26,-103.57)  133.27                80
 07/21/2023   21:23:46   (   0.01,-104.72) (  -0.94,-108.99)  485.96                80
 07/22/2023   21:08:03   (   0.01,-104.73) (   0.04,-104.53)   22.53                80
 07/25/2023   09:12:01   (  -0.01,-104.77) (   0.16,-105.45)   78.50                80