Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/01/2023   10:24:31   (   0.04,  61.35) (  -0.75,  57.86)  397.76                80
 12/02/2023   10:08:45   (   0.03,  61.33) (   0.28,  62.33)  115.03                80
 12/03/2023   22:31:00   (  -0.05,  61.21) (   0.89,  56.97)  482.98                80
 12/04/2023   22:09:53   (  -0.04,  61.20) (  -0.09,  61.45)   29.06                80
 12/07/2023   10:13:49   (   0.05,  61.23) (  -0.14,  60.55)   78.60                80
 12/08/2023   09:58:02   (   0.04,  61.21) (   0.90,  65.01)  433.97                80
 12/09/2023   22:20:17   (  -0.05,  61.09) (   0.30,  59.66)  163.82                80
 12/10/2023   21:59:10   (  -0.04,  61.08) (  -0.75,  64.13)  347.66                80
 12/12/2023   10:21:32   (   0.05,  61.16) (  -0.50,  58.76)  274.55                80
 12/13/2023   10:05:45   (   0.04,  61.15) (   0.49,  63.23)  237.00                80
 12/14/2023   22:27:59   (  -0.06,  61.04) (   0.68,  57.88)  360.86                80