Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/09/2023   22:20:16   (  -0.06,  61.16) (   0.30,  59.67)  170.88                80
 12/10/2023   21:59:09   (  -0.04,  61.17) (  -0.69,  64.14)  338.72                80
 12/12/2023   10:21:32   (   0.06,  61.27) (  -0.52,  58.76)  286.36                80
 12/13/2023   10:05:45   (   0.04,  61.28) (   0.47,  63.24)  223.29                80
 12/14/2023   22:28:00   (  -0.06,  61.19) (   0.66,  57.88)  377.54                80
 12/15/2023   22:06:53   (  -0.05,  61.21) (  -0.33,  62.35)  131.13                80
 12/17/2023   10:29:15   (   0.07,  61.33) (  -0.93,  56.98)  496.30                80
 12/18/2023   10:13:27   (   0.06,  61.34) (   0.06,  61.46)   13.12                80
 12/20/2023   22:17:15   (  -0.07,  61.27) (   0.06,  60.57)   78.60                80
 12/21/2023   21:56:08   (  -0.05,  61.28) (  -0.93,  65.05)  429.91                80