Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 8 31.  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)
 09/01/2023   16:19:09   ( -73.34, 116.75) 09/01/2023   16:19:48  ( -73.34, 116.83)    2.40                39
 09/01/2023   17:09:54   (  73.25, -75.74) 09/01/2023   17:09:15  (  73.26, -75.70)    1.57                39
 09/04/2023   07:46:16   (  73.33,  65.04) 09/04/2023   07:46:49  (  73.31,  65.03)    1.20                33
 09/04/2023   08:36:59   ( -73.24,-127.45) 09/04/2023   08:36:18  ( -73.25,-127.48)    1.14                41
 09/06/2023   23:13:20   ( -73.32,  13.32) 09/06/2023   23:13:50  ( -73.34,  13.32)    2.59                30
 09/07/2023   00:04:05   (  73.24,-179.20) 09/07/2023   00:03:17  (  73.25,-179.22)    1.16                48
 09/09/2023   14:40:27   (  73.33, -38.45) 09/09/2023   14:40:50  (  73.32, -38.46)    1.40                23
 09/09/2023   15:31:10   ( -73.23, 129.09) 09/09/2023   15:30:19  ( -73.26, 129.04)    3.11                51
 09/12/2023   06:07:32   ( -73.32, -90.16) 09/12/2023   06:07:52  ( -73.31, -90.24)    3.03                20
 09/12/2023   06:58:17   (  73.26,  77.29) 09/12/2023   06:57:18  (  73.26,  77.32)    0.98                59