Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 5 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)
 05/12/2023   11:54:58   (   0.06,-146.64) (   0.21,-147.24)   69.44                80
 05/13/2023   11:33:55   (   0.08,-147.09) (  -0.86,-142.80)  488.21                80
 05/14/2023   23:59:08   (  -0.05,-147.77) (  -0.14,-148.26)   55.88                80
 05/17/2023   12:03:07   (   0.04,-148.93) (   0.09,-149.23)   34.30                80
 05/20/2023   00:07:16   (  -0.02,-150.04) (  -0.06,-150.24)   22.73                80
 05/22/2023   12:11:16   (   0.00,-151.18) (   0.00,-151.21)    3.71                80
 05/25/2023   00:12:44   (   0.00,-152.27) (   0.00,-152.21)    6.22                80