Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/29/2023   01:11:55   (   0.23,-166.57) (   0.29,-166.16)   46.85                13
 07/01/2023   13:14:25   (  -0.25,-167.52) (  -0.31,-167.14)   42.73                80
 07/04/2023   01:21:16   (   0.27,-168.44) (   0.36,-168.15)   32.91                80
 07/06/2023   13:22:38   (  -0.28,-169.36) (  -0.33,-169.12)   26.64                80
 07/09/2023   01:29:28   (   0.30,-170.27) (   0.33,-170.13)   15.70                80