Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2023   01:04:01   (   0.14,-160.30) (  -0.87,-164.62)  493.61                80
 06/14/2023   00:48:21   (   0.12,-160.70) (   0.24,-160.19)   58.17                80
 06/15/2023   13:10:45   (  -0.16,-161.32) (   0.83,-165.61)  489.14                80
 06/16/2023   12:52:25   (  -0.14,-161.72) (  -0.28,-161.18)   62.00                80
 06/18/2023   01:12:17   (   0.18,-162.32) (  -0.78,-166.63)  490.89                80
 06/19/2023   00:56:35   (   0.16,-162.72) (   0.28,-162.19)   59.94                80
 06/20/2023   13:16:20   (  -0.20,-163.32) (   0.79,-167.60)  488.49                80
 06/21/2023   13:00:39   (  -0.18,-163.72) (  -0.33,-163.18)   62.06                80
 06/23/2023   01:20:30   (   0.21,-164.31) (  -0.78,-168.62)  491.76                80
 06/24/2023   01:04:49   (   0.19,-164.70) (   0.29,-164.18)   58.70                80
 06/25/2023   13:27:14   (  -0.23,-165.30) (   0.73,-169.60)  490.37                80