Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 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)
 12/07/2023   10:13:49   (   0.05,  61.21) (  -0.12,  60.54)   76.59                80
 12/08/2023   09:58:02   (   0.04,  61.19) (   0.92,  65.01)  436.21                80
 12/09/2023   22:20:17   (  -0.06,  61.08) (   0.28,  59.66)  161.72                80
 12/10/2023   21:59:09   (  -0.04,  61.06) (  -0.71,  64.14)  350.02                80
 12/12/2023   10:21:33   (   0.06,  61.13) (  -0.50,  58.75)  271.22                80
 12/13/2023   10:05:45   (   0.04,  61.12) (   0.49,  63.23)  240.60                80
 12/14/2023   22:28:00   (  -0.06,  61.01) (   0.63,  57.87)  357.46                80
 12/15/2023   22:06:53   (  -0.05,  61.00) (  -0.36,  62.35)  153.33                80
 12/17/2023   10:29:15   (   0.07,  61.09) (  -0.89,  56.97)  470.23                80
 12/18/2023   10:13:29   (   0.06,  61.08) (   0.16,  61.44)   41.11                80