Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 10 5.  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)
 10/06/2023   00:20:40   ( -74.03,  -4.73) 10/06/2023   00:21:47  ( -73.92,  -2.45)   70.92                67
 10/06/2023   01:11:14   (  73.43, 164.01) 10/06/2023   01:11:22  (  73.42, 164.12)    3.42                 8
 10/06/2023   02:01:57   ( -73.32, -28.42) 10/06/2023   02:00:51  ( -73.35, -28.40)    3.40                66
 10/08/2023   15:47:41   (  73.89, -56.12) 10/08/2023   15:48:50  (  73.75, -54.58)   50.36                69
 10/08/2023   16:38:17   ( -73.43, 112.30) 10/08/2023   16:38:24  ( -73.42, 112.35)    2.33                 7
 10/08/2023   17:29:01   (  73.33, -80.17) 10/08/2023   17:27:51  (  73.33, -80.18)    0.62                70
 10/11/2023   07:14:42   ( -73.80,-107.62) 10/11/2023   07:15:52  ( -73.71,-106.42)   38.72                70
 10/11/2023   08:05:20   (  73.41,  60.62) 10/11/2023   08:05:23  (  73.41,  60.59)    1.17                 3
 10/11/2023   08:56:04   ( -73.34,-131.91) 10/11/2023   08:54:52  ( -73.34,-131.92)    0.31                72
 10/13/2023   22:41:40   (  73.60,-158.85) 10/13/2023   22:42:52  (  73.55,-158.50)   12.47                72
 10/13/2023   23:32:22   ( -73.43,   8.85) 10/13/2023   23:32:22  ( -73.43,   8.89)    1.21                 0
 10/14/2023   00:23:03   (  73.19, 176.72) 10/14/2023   00:21:51  (  73.23, 176.12)   19.90                72
 10/16/2023   14:08:41   ( -73.54, 149.58) 10/16/2023   14:09:52  ( -73.54, 149.73)    4.65                71
 10/16/2023   14:59:25   (  73.44, -42.89) 10/16/2023   14:59:19  (  73.44, -42.83)    1.92                 6