Simultaneous Nadir Overpasses (SNOs) between GOES-17 and FY3D
TLE Epoch: 2023 8 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 08/05/2023   09:09:43   (   0.01,-104.73) (  -0.00,-104.74)    2.10                80
 08/07/2023   21:11:07   (  -0.01,-104.69) (  -0.25,-105.68)  113.32                80
 08/08/2023   20:55:24   (  -0.01,-104.69) (   0.75,-101.22)  394.72                80
 08/10/2023   09:17:44   (   0.02,-104.72) (   0.43,-106.61)  214.47                80
 08/11/2023   08:56:41   (   0.02,-104.72) (  -0.58,-102.15)  293.27                80
 08/12/2023   21:19:09   (  -0.03,-104.68) (  -0.67,-107.55)  327.40                80
 08/13/2023   21:03:26   (  -0.03,-104.68) (   0.33,-103.10)  180.69                80
 08/15/2023   09:25:45   (   0.04,-104.72) (   0.88,-108.47)  427.64                80
 08/16/2023   09:04:41   (   0.04,-104.71) (  -0.13,-104.01)   80.35                80