Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 6 12.  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)
 06/14/2023   10:26:33   ( -73.06,-155.65) 06/14/2023   10:27:04  ( -73.08,-155.62)    2.12                31
 06/14/2023   11:17:18   (  73.00,  11.80) 06/14/2023   11:16:31  (  72.99,  11.85)    1.79                47
 06/17/2023   01:53:44   (  73.07, 152.57) 06/17/2023   01:54:06  (  73.08, 152.63)    2.08                22
 06/17/2023   02:44:27   ( -72.96, -39.87) 06/17/2023   02:43:36  ( -72.96, -39.97)    3.28                51
 06/19/2023   16:30:24   (  73.85, -68.30) 06/19/2023   16:31:29  (  73.77, -65.31)   92.98                65
 06/19/2023   17:20:54   ( -73.09, 100.78) 06/19/2023   17:21:10  ( -73.08, 100.87)    3.19                16
 06/19/2023   18:11:38   (  72.98, -91.67) 06/19/2023   18:10:37  (  72.99, -91.67)    1.28                61
 06/22/2023   07:57:28   ( -73.63,-119.51) 06/22/2023   07:58:36  ( -73.54,-117.57)   61.75                68
 06/22/2023   08:48:03   (  73.07,  49.08) 06/22/2023   08:48:10  (  73.08,  49.13)    2.46                 7
 06/22/2023   09:38:46   ( -72.96,-143.37) 06/22/2023   09:37:40  ( -72.97,-143.46)    3.59                66
 06/24/2023   23:24:32   (  73.31,-170.54) 06/24/2023   23:25:43  (  73.21,-170.01)   20.41                71
 06/25/2023   00:15:12   ( -73.05,  -2.64) 06/25/2023   00:15:14  ( -73.04,  -2.71)    2.47                 2