Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2025 9 21.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 09/23/2025   02:11:15   ( -76.30, -23.87) 09/23/2025   02:12:22  ( -76.32, -23.81)    2.73                67
 09/23/2025   03:02:00   (  76.27, 143.54) 09/23/2025   03:01:49  (  76.26, 143.63)    3.21                11
 09/23/2025   03:52:32   ( -75.74, -47.25) 09/23/2025   03:51:26  ( -75.79, -50.18)   80.48                66
 09/25/2025   18:27:54   ( -76.31,  92.00) 09/25/2025   18:28:52  ( -76.29,  91.99)    2.13                58
 09/25/2025   19:18:38   (  76.25,-100.45) 09/25/2025   19:18:18  (  76.27,-100.43)    3.09                20
 09/28/2025   10:44:31   ( -76.28,-151.99) 09/28/2025   10:45:20  ( -76.29,-152.14)    3.89                49
 09/28/2025   11:35:16   (  76.27,  15.37) 09/28/2025   11:34:46  (  76.27,  15.44)    1.70                30
 10/01/2025   03:01:10   ( -76.31, -36.17) 10/01/2025   03:01:48  ( -76.31, -36.17)    0.56                38
 10/01/2025   03:51:54   (  76.26, 131.34) 10/01/2025   03:51:15  (  76.24, 131.24)    3.22                39
 10/03/2025   19:17:48   ( -76.30,  79.79) 10/03/2025   19:18:16  ( -76.32,  79.72)    2.87                28