Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/09/2023   00:40:05   (   0.09,-158.64) (   0.20,-158.19)   51.43                80
 06/10/2023   13:02:30   (  -0.13,-159.28) (   0.88,-163.61)  494.05                80
 06/11/2023   12:44:09   (  -0.10,-159.69) (  -0.23,-159.18)   58.09                80
 06/13/2023   01:04:01   (   0.14,-160.30) (  -0.85,-164.63)  493.62                80
 06/14/2023   00:48:21   (   0.12,-160.70) (   0.26,-160.20)   58.32                80
 06/15/2023   13:10:45   (  -0.16,-161.33) (   0.82,-165.61)  488.26                80
 06/16/2023   12:49:44   (  -0.14,-161.73) (  -0.24,-161.17)   63.00                80
 06/18/2023   01:12:17   (   0.18,-162.33) (  -0.77,-166.63)  490.39                80
 06/19/2023   00:56:36   (   0.16,-162.72) (   0.30,-162.19)   60.57                80
 06/20/2023   13:19:00   (  -0.20,-163.34) (   0.78,-167.61)  487.09                80
 06/21/2023   12:57:59   (  -0.18,-163.73) (  -0.28,-163.17)   63.54                80