Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/11/2023   12:42:59   (  -0.10,-159.68) (  -0.22,-159.18)   57.76                10
 06/13/2023   01:04:01   (   0.14,-160.30) (  -0.86,-164.62)  493.57                80
 06/14/2023   00:48:21   (   0.12,-160.70) (   0.25,-160.20)   58.29                80
 06/15/2023   13:10:45   (  -0.16,-161.33) (   0.82,-165.61)  488.78                80
 06/16/2023   12:52:25   (  -0.14,-161.72) (  -0.29,-161.18)   62.44                80
 06/18/2023   01:12:17   (   0.18,-162.32) (  -0.77,-166.63)  490.57                80
 06/19/2023   00:56:36   (   0.16,-162.72) (   0.29,-162.19)   60.33                80
 06/20/2023   13:19:00   (  -0.20,-163.33) (   0.79,-167.60)  487.84                80
 06/21/2023   13:00:39   (  -0.18,-163.72) (  -0.33,-163.18)   62.76                80
 06/23/2023   01:20:31   (   0.21,-164.31) (  -0.78,-168.62)  491.16                80
 06/24/2023   01:04:49   (   0.19,-164.70) (   0.29,-164.18)   59.35                80