Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2023   10:18:31   (   0.07,  61.33) (  -0.27,  59.67)  188.29                80
 12/24/2023   10:02:42   (   0.06,  61.33) (   0.67,  64.16)  321.45                80
 12/25/2023   22:24:56   (  -0.07,  61.24) (   0.48,  58.80)  277.52                80
 12/26/2023   22:03:49   (  -0.06,  61.25) (  -0.53,  63.28)  231.35                80
 12/28/2023   10:26:11   (   0.06,  61.39) (  -0.71,  57.90)  396.85                80
 12/29/2023   10:10:24   (   0.06,  61.40) (   0.30,  62.38)  112.44                80
 12/30/2023   22:32:37   (  -0.07,  61.29) (   0.89,  57.03)  485.74                80
 12/31/2023   22:11:30   (  -0.06,  61.31) (  -0.12,  61.51)   23.07                80
 01/03/2024   10:15:23   (   0.07,  61.46) (  -0.14,  60.62)   97.17                80
 01/04/2024   09:59:36   (   0.06,  61.48) (   0.88,  65.09)  411.85                80