Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2023   10:13:28   (   0.06,  61.30) (   0.07,  61.46)   17.88                80
 12/20/2023   22:17:15   (  -0.07,  61.21) (   0.10,  60.58)   72.10                80
 12/21/2023   21:56:07   (  -0.06,  61.22) (  -0.90,  65.06)  437.15                80
 12/23/2023   10:18:30   (   0.07,  61.34) (  -0.30,  59.67)  189.65                80
 12/24/2023   10:02:43   (   0.06,  61.35) (   0.71,  64.15)  319.81                80
 12/25/2023   22:24:56   (  -0.07,  61.25) (   0.50,  58.81)  279.45                80
 12/26/2023   22:03:49   (  -0.05,  61.27) (  -0.50,  63.28)  229.21                80
 12/28/2023   10:26:11   (   0.06,  61.41) (  -0.74,  57.91)  399.37                80
 12/29/2023   10:10:24   (   0.06,  61.42) (   0.27,  62.38)  109.64                80
 12/30/2023   22:32:37   (  -0.07,  61.32) (   0.93,  57.04)  488.95                80
 12/31/2023   22:11:29   (  -0.06,  61.34) (  -0.08,  61.51)   19.64                80