Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 6 25.  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)
 06/27/2023   14:51:40   ( -73.28, 137.79) 06/27/2023   14:52:52  ( -73.23, 138.24)   15.58                72
 06/27/2023   15:42:22   (  73.05, -54.40) 06/27/2023   15:42:21  (  73.04, -54.50)    3.77                 1
 06/27/2023   16:33:04   ( -72.91, 113.24) 06/27/2023   16:31:50  ( -72.97, 113.00)   10.39                74
 06/30/2023   06:18:48   (  73.16,  86.30) 06/30/2023   06:19:57  (  73.14,  86.31)    2.51                69
 06/30/2023   07:09:31   ( -73.07,-106.18) 06/30/2023   07:09:26  ( -73.08,-106.18)    1.02                 5
 06/30/2023   08:00:09   (  72.64,  62.05) 06/30/2023   07:58:59  (  72.67,  60.67)   46.16                70
 07/02/2023   21:45:56   ( -73.14,  34.60) 07/02/2023   21:47:02  ( -73.15,  34.57)    1.89                66
 07/02/2023   22:36:41   (  73.06,-157.91) 07/02/2023   22:36:29  (  73.06,-157.97)    1.91                12
 07/02/2023   23:27:15   ( -72.51,  10.56) 07/02/2023   23:26:06  ( -72.58,   8.72)   61.79                69
 07/05/2023   13:13:06   (  73.14, -17.15) 07/05/2023   13:14:04  (  73.15, -17.19)    1.96                58
 07/05/2023   14:03:50   ( -73.10, 150.26) 07/05/2023   14:03:33  ( -73.09, 150.33)    2.18                17
 07/08/2023   04:40:13   ( -73.13, -68.88) 07/08/2023   04:41:07  ( -73.15, -68.95)    3.01                54
 07/08/2023   05:30:58   (  73.05,  98.60) 07/08/2023   05:30:34  (  73.06,  98.50)    3.25                24