Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 5 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/17/2023   12:03:07   (   0.04,-148.92) (   0.12,-149.22)   34.42                80
 05/20/2023   00:04:36   (  -0.02,-150.03) (  -0.09,-150.23)   22.95                80
 05/22/2023   12:08:35   (   0.01,-151.17) (   0.03,-151.20)    4.60                80
 05/25/2023   00:15:24   (   0.01,-152.26) (   0.02,-152.21)    5.36                80
 05/27/2023   12:19:24   (  -0.01,-153.38) (  -0.08,-153.19)   22.60                80
 05/30/2023   00:23:32   (   0.03,-154.45) (   0.09,-154.19)   30.72                80