Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/19/2023   00:56:35   (   0.16,-162.70) (   0.27,-162.19)   58.41                80
 06/20/2023   13:19:01   (  -0.20,-163.30) (   0.75,-167.61)  491.24                80
 06/21/2023   13:00:39   (  -0.18,-163.69) (  -0.31,-163.17)   58.89                80
 06/23/2023   01:20:31   (   0.21,-164.28) (  -0.74,-168.62)  494.90                80
 06/24/2023   01:04:50   (   0.19,-164.66) (   0.32,-164.18)   55.15                80
 06/25/2023   13:24:34   (  -0.23,-165.25) (   0.75,-169.60)  495.15                80
 06/26/2023   13:08:53   (  -0.21,-165.64) (  -0.32,-165.16)   54.41                80
 06/29/2023   01:13:04   (   0.23,-166.60) (   0.35,-166.17)   48.64                80
 07/01/2023   13:17:06   (  -0.25,-167.54) (  -0.35,-167.15)   44.93                80