Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 5 17.  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)
 05/18/2023   23:55:13   ( -73.45,   0.97) 05/18/2023   23:56:23  ( -73.34,   2.33)   44.75                70
 05/19/2023   00:45:50   (  72.98, 169.33) 05/19/2023   00:45:55  (  72.99, 169.27)    2.16                 5
 05/19/2023   01:36:34   ( -72.93, -23.25) 05/19/2023   01:35:24  ( -72.92, -23.23)    0.90                70
 05/21/2023   15:22:15   (  73.19, -50.19) 05/21/2023   15:23:26  (  73.15, -49.83)   12.88                71
 05/21/2023   16:12:57   ( -73.04, 117.47) 05/21/2023   16:12:56  ( -73.03, 117.57)    3.29                 1
 05/21/2023   17:03:38   (  72.77, -74.65) 05/21/2023   17:02:25  (  72.83, -75.17)   18.29                73
 05/24/2023   06:49:19   ( -73.10,-101.71) 05/24/2023   06:50:28  ( -73.11,-101.67)    1.69                69
 05/24/2023   07:40:03   (  72.99,  65.83) 05/24/2023   07:39:55  (  73.01,  65.79)    2.79                 8
 05/24/2023   08:30:40   ( -72.58,-125.97) 05/24/2023   08:29:30  ( -72.63,-127.31)   44.87                70
 05/26/2023   22:16:25   (  73.11,-153.49) 05/26/2023   22:17:25  (  73.12,-153.39)    3.44                60
 05/26/2023   23:07:08   ( -73.00,  14.08) 05/26/2023   23:06:55  ( -73.01,  14.02)    2.50                13
 05/26/2023   23:57:40   (  72.29,-177.12) 05/26/2023   23:56:33  (  72.33,-179.63)   84.73                67
 05/29/2023   13:43:31   ( -73.12, 154.76) 05/29/2023   13:44:26  ( -73.10, 154.81)    2.65                55
 05/29/2023   14:34:15   (  73.02, -37.71) 05/29/2023   14:33:53  (  73.00, -37.74)    2.49                22