Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 5 24.  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)
 05/24/2023   06:49:23   ( -73.30,-102.17) 05/24/2023   06:50:34  ( -73.23,-101.23)   30.76                71
 05/24/2023   07:40:03   (  72.99,  65.84) 05/24/2023   07:40:04  (  72.99,  65.92)    2.81                 1
 05/24/2023   08:30:45   ( -72.88,-126.62) 05/24/2023   08:29:33  ( -72.87,-126.68)    2.26                72
 05/26/2023   22:16:26   (  73.16,-153.60) 05/26/2023   22:17:37  (  73.12,-153.22)   13.26                71
 05/26/2023   23:07:07   ( -72.95,  14.18) 05/26/2023   23:07:08  ( -72.95,  14.08)    3.33                 1
 05/26/2023   23:57:49   (  72.74,-178.06) 05/26/2023   23:56:36  (  72.81,-178.56)   17.79                73
 05/29/2023   13:43:30   ( -73.09, 154.84) 05/29/2023   13:44:42  ( -73.05, 154.89)    3.83                72
 05/29/2023   14:34:14   (  72.98, -37.62) 05/29/2023   14:34:09  (  72.96, -37.65)    2.09                 5
 05/29/2023   15:24:53   ( -72.67, 130.37) 05/29/2023   15:23:41  ( -72.74, 129.56)   28.06                72
 06/01/2023   05:10:36   (  73.07, 103.13) 06/01/2023   05:11:43  (  73.04, 103.12)    3.55                67
 06/01/2023   06:01:20   ( -73.01, -89.41) 06/01/2023   06:01:12  ( -72.98, -89.37)    3.09                 8
 06/01/2023   06:51:55   (  72.45,  79.08) 06/01/2023   06:50:46  (  72.51,  77.38)   57.22                69
 06/03/2023   20:37:41   ( -73.05,  51.44) 06/03/2023   20:38:46  ( -73.04,  51.35)    3.25                65
 06/03/2023   21:28:26   (  73.01,-141.15) 06/03/2023   21:28:12  (  72.99,-141.09)    2.33                14
 06/03/2023   22:18:59   ( -72.38,  27.48) 06/03/2023   22:17:51  ( -72.41,  25.42)   69.20                68
 06/06/2023   12:04:46   (  73.07,  -0.32) 06/06/2023   12:05:44  (  73.08,  -0.31)    1.41                58
 06/06/2023   12:55:30   ( -72.99, 167.15) 06/06/2023   12:55:14  ( -72.97, 167.11)    3.07                16