Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2023   10:05:45   (   0.05,  61.26) (   0.48,  63.23)  224.63                80
 12/14/2023   22:27:59   (  -0.06,  61.18) (   0.70,  57.89)  375.89                80
 12/15/2023   22:06:52   (  -0.05,  61.19) (  -0.29,  62.36)  133.16                80
 12/17/2023   10:29:15   (   0.07,  61.30) (  -0.92,  56.98)  493.43                80
 12/18/2023   10:13:28   (   0.06,  61.31) (   0.07,  61.46)   16.17                80
 12/20/2023   22:17:15   (  -0.07,  61.23) (   0.11,  60.58)   74.73                80
 12/21/2023   21:56:08   (  -0.06,  61.24) (  -0.95,  65.04)  434.16                80
 12/23/2023   10:18:30   (   0.07,  61.37) (  -0.31,  59.67)  193.33                80
 12/24/2023   10:02:43   (   0.06,  61.38) (   0.69,  64.15)  315.69                80
 12/25/2023   22:24:57   (  -0.07,  61.29) (   0.48,  58.80)  284.18                80
 12/26/2023   22:03:50   (  -0.05,  61.31) (  -0.52,  63.27)  224.11                80