Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 10 15.  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)
 10/17/2022   07:09:22   ( -72.64,-108.38) 10/17/2022   07:10:33  ( -72.54,-107.26)   38.98                71
 10/17/2022   08:00:00   (  72.21,  59.79) 10/17/2022   08:00:05  (  72.19,  59.73)    3.35                 5
 10/17/2022   08:50:43   ( -72.12,-132.72) 10/17/2022   08:49:34  ( -72.13,-132.74)    0.97                69
 10/19/2022   22:36:25   (  72.71,-160.25) 10/19/2022   22:37:35  (  72.60,-158.91)   46.11                70
 10/19/2022   23:27:00   ( -72.22,   8.06) 10/19/2022   23:27:10  ( -72.22,   8.03)    1.55                10
 10/20/2022   00:17:45   (  72.14, 175.52) 10/20/2022   00:16:37  (  72.13, 175.50)    1.04                68
 10/22/2022   14:03:29   ( -72.92, 147.57) 10/22/2022   14:04:36  ( -72.83, 149.76)   72.39                67
 10/22/2022   14:54:02   (  72.24, -43.71) 10/22/2022   14:54:12  (  72.26, -43.67)    2.79                10
 10/22/2022   15:44:45   ( -72.15, 123.77) 10/22/2022   15:43:42  ( -72.15, 123.77)    0.48                63
 10/25/2022   05:30:31   (  72.95,  95.78) 10/25/2022   05:31:38  (  72.85,  98.03)   74.53                67
 10/25/2022   06:21:02   ( -72.26, -95.48) 10/25/2022   06:21:17  ( -72.26, -95.44)    1.47                15
 10/25/2022   07:11:47   (  72.18,  71.99) 10/25/2022   07:10:44  (  72.16,  72.03)    2.70                63
 10/27/2022   20:57:33   ( -73.14,  43.66) 10/27/2022   20:58:38  ( -73.04,  46.63)   96.94                65
 10/27/2022   21:48:02   (  72.25,-147.18) 10/27/2022   21:48:18  (  72.25,-147.22)    1.48                16
 10/27/2022   22:38:45   ( -72.17,  20.30) 10/27/2022   22:37:47  ( -72.19,  20.32)    3.00                58