Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 7 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 07/21/2023   21:23:45   (  -0.01,-104.70) (  -0.99,-108.97)  487.45                80
 07/22/2023   21:08:03   (  -0.01,-104.70) (   0.04,-104.53)   20.59                80
 07/25/2023   09:12:01   (   0.01,-104.73) (   0.15,-105.45)   81.59                80
 07/26/2023   08:50:57   (   0.01,-104.73) (  -0.84,-100.99)  426.10                80
 07/27/2023   21:13:26   (  -0.02,-104.69) (  -0.42,-106.39)  194.13                80
 07/28/2023   20:57:43   (  -0.02,-104.69) (   0.63,-101.95)  313.52                80
 07/30/2023   09:20:02   (   0.03,-104.71) (   0.64,-107.31)  296.74                80
 07/31/2023   08:59:00   (   0.03,-104.71) (  -0.41,-102.87)  210.50                80
 08/01/2023   21:21:28   (  -0.04,-104.66) (  -0.84,-108.27)  410.68                80
 08/02/2023   21:05:45   (  -0.04,-104.66) (   0.15,-103.81)   96.87                80