Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/12/2023   10:21:33   (   0.06,  61.26) (  -0.50,  58.76)  285.76                80
 12/13/2023   10:05:45   (   0.04,  61.27) (   0.48,  63.24)  224.01                80
 12/14/2023   22:27:59   (  -0.06,  61.18) (   0.71,  57.89)  376.76                80
 12/15/2023   22:06:53   (  -0.05,  61.20) (  -0.34,  62.35)  132.06                80
 12/17/2023   10:29:15   (   0.07,  61.32) (  -0.93,  56.98)  495.00                80
 12/18/2023   10:13:28   (   0.06,  61.33) (   0.06,  61.46)   14.55                80
 12/20/2023   22:17:16   (  -0.07,  61.25) (   0.07,  60.57)   76.99                80
 12/21/2023   21:56:08   (  -0.05,  61.27) (  -0.92,  65.05)  431.60                80
 12/23/2023   10:18:30   (   0.07,  61.40) (  -0.34,  59.68)  196.36                80
 12/24/2023   10:02:43   (   0.06,  61.41) (   0.66,  64.15)  312.44                80