Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/07/2023   10:13:49   (   0.05,  61.22) (  -0.09,  60.54)   77.23                80
 12/08/2023   09:58:02   (   0.04,  61.19) (   0.89,  65.02)  435.41                80
 12/09/2023   22:20:17   (  -0.06,  61.09) (   0.25,  59.65)  162.73                80
 12/10/2023   21:59:10   (  -0.04,  61.07) (  -0.74,  64.13)  348.82                80
 12/12/2023   10:21:33   (   0.06,  61.14) (  -0.46,  58.75)  272.73                80
 12/13/2023   10:05:46   (   0.04,  61.13) (   0.53,  63.22)  238.94                80
 12/14/2023   22:28:00   (  -0.06,  61.03) (   0.65,  57.87)  359.27                80
 12/15/2023   22:06:52   (  -0.05,  61.02) (  -0.35,  62.35)  151.35                80
 12/17/2023   10:29:15   (   0.06,  61.11) (  -0.90,  56.98)  472.51                80
 12/18/2023   10:13:28   (   0.06,  61.11) (   0.16,  61.44)   38.74                80