Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 12 9.  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)
 12/11/2023   03:26:21   ( -73.69, -49.31) 12/11/2023   03:27:19  ( -73.68, -49.36)    1.62                58
 12/11/2023   04:17:07   (  73.63, 118.13) 12/11/2023   04:16:46  (  73.60, 118.11)    3.56                21
 12/13/2023   18:53:19   (  73.69,-101.01) 12/13/2023   18:54:21  (  73.69,-101.09)    2.58                62
 12/13/2023   19:44:02   ( -73.63,  66.43) 12/13/2023   19:43:50  ( -73.63,  66.40)    1.04                12
 12/13/2023   20:34:34   (  72.89,-124.56) 12/13/2023   20:33:29  (  72.91,-127.43)   93.99                65
 12/16/2023   10:20:16   ( -73.74,-152.83) 12/16/2023   10:21:26  ( -73.71,-152.83)    3.87                70
 12/16/2023   11:11:01   (  73.65,  14.70) 12/16/2023   11:10:52  (  73.67,  14.73)    2.73                 9
 12/16/2023   12:01:37   ( -73.24,-177.04) 12/16/2023   12:00:27  ( -73.30,-178.42)   44.82                70
 12/19/2023   01:47:16   (  73.82, 155.29) 12/19/2023   01:48:27  (  73.78, 155.56)    9.51                71
 12/19/2023   02:37:57   ( -73.66, -37.01) 12/19/2023   02:37:57  ( -73.67, -37.04)    1.93                 0
 12/19/2023   03:28:38   (  73.37, 130.98) 12/19/2023   03:27:27  (  73.42, 130.07)   29.75                71
 12/21/2023   17:14:18   ( -74.12, 102.84) 12/21/2023   17:15:28  ( -73.97, 104.21)   45.23                70
 12/21/2023   18:04:56   (  73.69, -88.79) 12/21/2023   18:04:59  (  73.67, -88.81)    3.00                 3