Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/14/2023   00:48:21   (   0.12,-160.70) (   0.26,-160.20)   58.24                80
 06/15/2023   13:10:45   (  -0.16,-161.32) (   0.82,-165.61)  489.17                80
 06/16/2023   12:49:44   (  -0.14,-161.72) (  -0.24,-161.17)   61.97                80
 06/18/2023   01:12:17   (   0.18,-162.32) (  -0.77,-166.63)  490.95                80
 06/19/2023   00:56:36   (   0.16,-162.72) (   0.29,-162.19)   59.88                80
 06/20/2023   13:19:00   (  -0.20,-163.32) (   0.78,-167.61)  488.60                80
 06/21/2023   12:57:59   (  -0.18,-163.71) (  -0.28,-163.17)   61.90                80
 06/23/2023   01:20:31   (   0.21,-164.31) (  -0.77,-168.62)  491.91                80
 06/24/2023   01:04:49   (   0.19,-164.70) (   0.29,-164.18)   58.50                80
 06/25/2023   13:27:15   (  -0.23,-165.30) (   0.72,-169.61)  490.61                80
 06/26/2023   13:08:53   (  -0.21,-165.68) (  -0.34,-165.17)   59.35                80