Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 10 4.  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)
 10/06/2023   00:20:39   ( -73.99,  -4.64) 10/06/2023   00:21:47  ( -73.91,  -2.47)   67.06                68
 10/06/2023   01:11:13   (  73.40, 164.10) 10/06/2023   01:11:22  (  73.41, 164.09)    1.69                 9
 10/06/2023   02:01:57   ( -73.33, -28.44) 10/06/2023   02:00:51  ( -73.34, -28.42)    1.08                66
 10/08/2023   15:47:40   (  73.86, -56.03) 10/08/2023   15:48:50  (  73.74, -54.59)   46.29                70
 10/08/2023   16:38:16   ( -73.39, 112.38) 10/08/2023   16:38:24  ( -73.41, 112.34)    2.44                 8
 10/08/2023   17:29:01   (  73.35, -80.19) 10/08/2023   17:27:51  (  73.32, -80.20)    2.30                70
 10/11/2023   07:14:42   ( -73.81,-107.64) 10/11/2023   07:15:52  ( -73.71,-106.42)   39.80                70
 10/11/2023   08:05:20   (  73.42,  60.60) 10/11/2023   08:05:23  (  73.41,  60.59)    1.59                 3
 10/11/2023   08:56:04   ( -73.35,-131.94) 10/11/2023   08:54:52  ( -73.34,-131.92)    1.48                72
 10/13/2023   22:41:42   (  73.66,-158.99) 10/13/2023   22:42:53  (  73.56,-158.48)   19.63                71
 10/13/2023   23:32:23   ( -73.44,   8.83) 10/13/2023   23:32:23  ( -73.44,   8.91)    2.46                 0
 10/14/2023   00:23:04   (  73.20, 176.70) 10/14/2023   00:21:52  (  73.24, 176.14)   18.65                72
 10/16/2023   14:08:41   ( -73.54, 149.56) 10/16/2023   14:09:53  ( -73.51, 149.66)    5.14                72
 10/16/2023   14:59:24   (  73.40, -42.79) 10/16/2023   14:59:20  (  73.41, -42.90)    3.50                 4