Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2023   21:56:07   (  -0.06,  61.21) (  -0.92,  65.05)  437.89                80
 12/23/2023   10:18:30   (   0.07,  61.33) (  -0.33,  59.68)  188.63                80
 12/24/2023   10:02:42   (   0.06,  61.34) (   0.67,  64.16)  321.01                80
 12/25/2023   22:24:57   (  -0.07,  61.24) (   0.48,  58.80)  278.03                80
 12/26/2023   22:03:49   (  -0.05,  61.26) (  -0.53,  63.28)  230.76                80
 12/28/2023   10:26:11   (   0.06,  61.39) (  -0.71,  57.90)  397.60                80
 12/29/2023   10:10:24   (   0.06,  61.40) (   0.30,  62.38)  111.60                80
 12/30/2023   22:32:37   (  -0.07,  61.30) (   0.90,  57.03)  486.70                80
 12/31/2023   22:11:30   (  -0.06,  61.32) (  -0.12,  61.51)   22.02                80
 01/03/2024   10:15:24   (   0.06,  61.48) (  -0.15,  60.62)   98.43                80