Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2023   01:20:31   (   0.21,-164.27) (  -0.79,-168.61)  495.40                80
 06/24/2023   01:04:49   (   0.19,-164.66) (   0.28,-164.17)   54.52                80
 06/25/2023   13:27:14   (  -0.23,-165.24) (   0.73,-169.60)  496.10                80
 06/26/2023   13:08:53   (  -0.21,-165.63) (  -0.34,-165.16)   53.39                80
 06/29/2023   01:13:03   (   0.23,-166.58) (   0.31,-166.16)   47.27                80
 07/01/2023   13:14:26   (  -0.25,-167.52) (  -0.32,-167.14)   43.19                80
 07/04/2023   01:21:16   (   0.27,-168.45) (   0.36,-168.16)   33.68                80