Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/21/2023   12:57:58   (  -0.18,-163.68) (  -0.27,-163.16)   58.48                80
 06/23/2023   01:20:31   (   0.21,-164.27) (  -0.78,-168.61)  495.32                80
 06/24/2023   01:04:49   (   0.19,-164.66) (   0.29,-164.17)   54.59                80
 06/25/2023   13:24:33   (  -0.23,-165.25) (   0.78,-169.59)  496.01                80
 06/26/2023   13:06:12   (  -0.21,-165.63) (  -0.28,-165.15)   53.53                80
 06/29/2023   01:13:03   (   0.23,-166.58) (   0.31,-166.17)   47.45                80
 07/01/2023   13:14:26   (  -0.25,-167.53) (  -0.32,-167.14)   43.40                80
 07/04/2023   01:18:35   (   0.27,-168.45) (   0.31,-168.15)   34.01                80