Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 6 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/10/2023   13:02:30   (  -0.13,-159.28) (   0.84,-163.62)  494.18                80
 06/11/2023   12:41:29   (  -0.10,-159.68) (  -0.21,-159.18)   57.95                80
 06/13/2023   01:04:01   (   0.14,-160.30) (  -0.87,-164.62)  493.51                80
 06/14/2023   00:48:21   (   0.12,-160.70) (   0.25,-160.20)   58.37                80
 06/15/2023   13:10:45   (  -0.16,-161.33) (   0.83,-165.61)  488.44                80
 06/16/2023   12:52:25   (  -0.14,-161.73) (  -0.28,-161.18)   62.78                80
 06/18/2023   01:12:17   (   0.18,-162.33) (  -0.78,-166.63)  490.32                80
 06/19/2023   00:56:35   (   0.16,-162.72) (   0.28,-162.19)   60.62                80
 06/20/2023   13:19:01   (  -0.20,-163.34) (   0.74,-167.62)  487.32                80
 06/21/2023   13:00:39   (  -0.18,-163.73) (  -0.32,-163.18)   63.28                80
 06/23/2023   01:20:31   (   0.21,-164.32) (  -0.78,-168.62)  490.74                80
 06/24/2023   01:04:50   (   0.19,-164.71) (   0.34,-164.19)   59.85                80