Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 28.  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   01:13:03   (   0.23,-166.57) (   0.34,-166.17)   46.67                80
 07/01/2023   13:17:06   (  -0.25,-167.51) (  -0.35,-167.15)   42.51                80
 07/04/2023   01:21:16   (   0.27,-168.44) (   0.34,-168.15)   32.62                80
 07/06/2023   13:22:38   (  -0.28,-169.35) (  -0.31,-169.12)   26.49                80
 07/09/2023   01:26:47   (   0.30,-170.26) (   0.31,-170.12)   15.55                80
 07/11/2023   13:33:30   (  -0.32,-171.18) (  -0.35,-171.11)    8.61                80