Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/08/2023   09:58:02   (   0.04,  61.25) (   0.90,  65.01)  429.65                80
 12/09/2023   22:20:16   (  -0.06,  61.16) (   0.30,  59.67)  171.02                80
 12/10/2023   21:59:09   (  -0.04,  61.17) (  -0.68,  64.14)  338.47                80
 12/12/2023   10:21:32   (   0.06,  61.28) (  -0.52,  58.76)  286.99                80
 12/13/2023   10:05:45   (   0.04,  61.28) (   0.47,  63.24)  222.55                80
 12/14/2023   22:28:00   (  -0.06,  61.20) (   0.66,  57.88)  378.23                80
 12/15/2023   22:06:53   (  -0.05,  61.21) (  -0.33,  62.35)  130.34                80
 12/17/2023   10:29:15   (   0.07,  61.34) (  -0.93,  56.98)  497.47                80
 12/18/2023   10:13:27   (   0.06,  61.35) (   0.06,  61.46)   11.73                80
 12/20/2023   22:17:14   (  -0.07,  61.28) (   0.12,  60.58)   79.92                80
 12/21/2023   21:56:07   (  -0.05,  61.30) (  -0.88,  65.06)  428.48                80