Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 5 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/07/2023   11:46:48   (   0.07,-144.33) (   0.29,-145.26)  106.76                80
 05/08/2023   11:25:46   (   0.09,-144.78) (  -0.83,-140.83)  451.24                80
 05/09/2023   23:50:58   (  -0.06,-145.46) (  -0.25,-146.27)   92.98                80
 05/10/2023   23:29:55   (  -0.08,-145.91) (   0.82,-141.83)  464.75                80
 05/12/2023   11:54:58   (   0.06,-146.63) (   0.22,-147.24)   70.34                80
 05/13/2023   11:33:56   (   0.08,-147.08) (  -0.91,-142.81)  487.15                80
 05/14/2023   23:59:07   (  -0.05,-147.75) (  -0.16,-148.26)   57.86                80
 05/15/2023   23:38:05   (  -0.07,-148.20) (   0.92,-143.82)  499.52                80
 05/17/2023   12:03:07   (   0.04,-148.92) (   0.12,-149.23)   36.26                80
 05/20/2023   00:04:36   (  -0.02,-150.01) (  -0.09,-150.24)   25.87                80