Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 10 18.  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)
 10/19/2023   05:35:53   (  74.00,  96.72) 10/19/2023   05:37:01  (  73.87,  98.64)   60.81                68
 10/19/2023   06:26:27   ( -73.46, -94.64) 10/19/2023   06:26:37  ( -73.44, -94.67)    2.35                10
 10/19/2023   07:17:12   (  73.40,  72.80) 10/19/2023   07:16:03  (  73.41,  72.91)    3.49                69
 10/21/2023   21:02:53   ( -73.98,  45.07) 10/21/2023   21:04:02  ( -73.86,  46.86)   56.80                69
 10/21/2023   21:53:29   (  73.48,-146.42) 10/21/2023   21:53:35  (  73.46,-146.36)    2.82                 6
 10/21/2023   22:44:12   ( -73.38,  21.14) 10/21/2023   22:43:04  ( -73.39,  21.13)    1.96                68
 10/24/2023   12:29:53   (  73.87,  -6.38) 10/24/2023   12:31:03  (  73.75,  -5.14)   41.14                70
 10/24/2023   13:20:30   ( -73.47, 161.89) 10/24/2023   13:20:36  ( -73.47, 161.91)    0.55                 6
 10/24/2023   14:11:14   (  73.37, -30.55) 10/24/2023   14:10:03  (  73.38, -30.64)    3.21                71
 10/27/2023   03:56:53   ( -73.83, -57.98) 10/27/2023   03:58:04  ( -73.72, -56.94)   34.27                71
 10/27/2023   04:47:32   (  73.47, 110.17) 10/27/2023   04:47:34  (  73.47, 110.17)    0.25                 2
 10/27/2023   05:38:16   ( -73.42, -82.39) 10/27/2023   05:37:03  ( -73.41, -82.33)    2.17                73
 10/29/2023   19:23:52   (  73.69,-109.37) 10/29/2023   19:25:03  (  73.63,-108.87)   16.85                71
 10/29/2023   20:14:33   ( -73.49,  58.42) 10/29/2023   20:14:34  ( -73.47,  58.41)    2.67                 1
 10/29/2023   21:05:14   (  73.23,-133.67) 10/29/2023   21:04:02  (  73.32,-134.26)   20.87                72
 11/01/2023   10:50:50   ( -73.62,-160.91) 11/01/2023   10:52:02  ( -73.59,-160.70)    7.31                72