Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 5 23.  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   ( -73.34,-102.26) 05/24/2023   06:50:34  ( -73.19,-101.32)   34.26                71
 05/24/2023   07:40:02   (  72.98,  65.86) 05/24/2023   07:40:04  (  72.95,  65.84)    3.40                 2
 05/24/2023   08:30:45   ( -72.87,-126.60) 05/24/2023   08:29:33  ( -72.88,-126.66)    2.29                72
 05/26/2023   22:16:26   (  73.16,-153.58) 05/26/2023   22:17:37  (  73.13,-153.21)   12.56                71
 05/26/2023   23:07:07   ( -72.94,  14.20) 05/26/2023   23:07:08  ( -72.96,  14.09)    3.66                 1
 05/26/2023   23:57:49   (  72.73,-178.04) 05/26/2023   23:56:37  (  72.76,-178.65)   20.09                72
 05/29/2023   13:43:30   ( -73.08, 154.86) 05/29/2023   13:44:42  ( -73.06, 154.90)    2.41                72
 05/29/2023   14:34:14   (  72.97, -37.60) 05/29/2023   14:34:09  (  72.96, -37.64)    1.53                 5
 05/29/2023   15:24:53   ( -72.66, 130.39) 05/29/2023   15:23:41  ( -72.74, 129.56)   28.90                72
 06/01/2023   05:10:36   (  73.07, 103.15) 06/01/2023   05:11:43  (  73.04, 103.11)    3.15                67
 06/01/2023   06:01:20   ( -73.00, -89.39) 06/01/2023   06:01:12  ( -72.98, -89.37)    2.06                 8
 06/01/2023   06:51:55   (  72.44,  79.09) 06/01/2023   06:50:46  (  72.51,  77.38)   57.99                69
 06/03/2023   20:37:41   ( -73.09,  51.35) 06/03/2023   20:38:44  ( -73.08,  51.45)    3.46                63
 06/03/2023   21:28:25   (  73.00,-141.13) 06/03/2023   21:28:11  (  72.98,-141.10)    1.67                14