Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2023   10:29:15   (   0.07,  61.29) (  -0.91,  56.98)  492.15                80
 12/18/2023   10:13:28   (   0.06,  61.30) (   0.08,  61.46)   17.80                80
 12/20/2023   22:17:15   (  -0.07,  61.21) (   0.10,  60.58)   72.26                80
 12/21/2023   21:56:07   (  -0.06,  61.22) (  -0.90,  65.06)  436.96                80
 12/23/2023   10:18:30   (   0.07,  61.34) (  -0.30,  59.67)  189.87                80
 12/24/2023   10:02:43   (   0.06,  61.35) (   0.69,  64.15)  319.53                80
 12/25/2023   22:24:57   (  -0.07,  61.26) (   0.46,  58.80)  279.87                80
 12/26/2023   22:03:49   (  -0.05,  61.27) (  -0.48,  63.28)  228.78                80
 12/28/2023   10:26:12   (   0.06,  61.41) (  -0.71,  57.90)  399.87                80
 12/29/2023   10:10:25   (   0.06,  61.42) (   0.29,  62.37)  109.10                80
 12/30/2023   22:32:38   (  -0.07,  61.32) (   0.92,  57.03)  489.67                80