Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/24/2023   01:04:49   (   0.19,-164.65) (   0.30,-164.18)   54.16                80
 06/25/2023   13:27:14   (  -0.23,-165.24) (   0.76,-169.59)  496.47                80
 06/26/2023   13:06:19   (  -0.20,-165.62) (  -0.31,-165.16)   52.88                73
 06/29/2023   01:13:03   (   0.23,-166.57) (   0.34,-166.17)   46.63                80
 07/01/2023   13:17:06   (  -0.25,-167.52) (  -0.35,-167.15)   42.43                80
 07/04/2023   01:21:16   (   0.27,-168.44) (   0.34,-168.15)   32.58                80
 07/06/2023   13:22:38   (  -0.28,-169.35) (  -0.31,-169.12)   26.29                80