Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/20/2023   13:19:00   (  -0.20,-163.30) (   0.75,-167.61)  491.46                80
 06/21/2023   13:00:39   (  -0.18,-163.68) (  -0.31,-163.17)   58.62                80
 06/23/2023   01:20:31   (   0.21,-164.27) (  -0.74,-168.62)  495.20                80
 06/24/2023   01:04:50   (   0.19,-164.66) (   0.32,-164.18)   54.80                80
 06/25/2023   13:27:14   (  -0.23,-165.25) (   0.75,-169.60)  495.63                80
 06/26/2023   13:08:53   (  -0.21,-165.63) (  -0.32,-165.16)   53.88                80
 06/29/2023   01:13:03   (   0.23,-166.59) (   0.35,-166.17)   48.07                80
 07/01/2023   13:17:06   (  -0.25,-167.53) (  -0.36,-167.15)   44.20                80