Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 9 30.  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)
 09/30/2023   17:26:36   ( -74.15,  98.40) 09/30/2023   17:27:42  ( -74.03, 101.32)   89.97                66
 09/30/2023   18:17:06   (  73.36, -92.37) 09/30/2023   18:17:20  (  73.38, -92.46)    3.39                14
 09/30/2023   19:07:50   ( -73.30,  75.08) 09/30/2023   19:06:49  ( -73.31,  75.03)    1.79                61
 10/03/2023   08:53:37   (  74.04,  46.96) 10/03/2023   08:54:44  (  73.95,  49.38)   74.65                67
 10/03/2023   09:44:09   ( -73.38,-144.14) 10/03/2023   09:44:22  ( -73.41,-144.16)    3.27                13
 10/03/2023   10:34:54   (  73.33,  23.29) 10/03/2023   10:33:49  (  73.33,  23.31)    0.97                65
 10/06/2023   00:20:40   ( -74.01,  -4.70) 10/06/2023   00:21:48  ( -73.90,  -2.50)   68.72                68
 10/06/2023   01:11:13   (  73.38, 164.15) 10/06/2023   01:11:23  (  73.39, 164.06)    3.50                10
 10/06/2023   02:01:57   ( -73.31, -28.39) 10/06/2023   02:00:52  ( -73.33, -28.44)    2.84                65
 10/08/2023   15:47:41   (  73.88, -56.08) 10/08/2023   15:48:50  (  73.79, -54.48)   50.39                69
 10/08/2023   16:38:17   ( -73.41, 112.35) 10/08/2023   16:38:25  ( -73.42, 112.35)    0.76                 8
 10/08/2023   17:29:01   (  73.32, -80.13) 10/08/2023   17:27:52  (  73.33, -80.20)    2.51                69
 10/11/2023   07:14:43   ( -73.82,-107.66) 10/11/2023   07:15:53  ( -73.74,-106.36)   41.34                70
 10/11/2023   08:05:21   (  73.43,  60.58) 10/11/2023   08:05:24  (  73.43,  60.64)    1.94                 3
 10/11/2023   08:56:05   ( -73.36,-131.95) 10/11/2023   08:54:53  ( -73.37,-131.86)    3.20                72
 10/13/2023   22:41:42   (  73.65,-158.98) 10/13/2023   22:42:54  (  73.56,-158.48)   18.97                72
 10/13/2023   23:32:23   ( -73.43,   8.85) 10/13/2023   23:32:24  ( -73.45,   8.92)    2.71                 1