Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 4 10.  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)
 04/12/2022   14:58:30   ( -72.29, 133.28) 04/12/2022   14:59:40  ( -72.17, 134.49)   43.37                70
 04/12/2022   15:49:07   (  71.78, -58.44) 04/12/2022   15:49:12  (  71.80, -58.50)    3.07                 5
 04/12/2022   16:39:50   ( -71.71, 109.01) 04/12/2022   16:38:42  ( -71.69, 108.94)    3.18                68
 04/15/2022   06:25:34   (  72.08,  81.94) 04/15/2022   06:26:45  (  72.01,  82.45)   18.94                71
 04/15/2022   07:16:13   ( -71.79,-110.20) 04/15/2022   07:16:17  ( -71.80,-110.29)    3.27                 4
 04/15/2022   08:06:57   (  71.64,  57.37) 04/15/2022   08:05:44  (  71.70,  57.18)    8.73                73
 04/17/2022   21:52:39   ( -72.03,  30.28) 04/17/2022   21:53:50  ( -71.99,  30.64)   12.95                71
 04/17/2022   22:43:22   (  71.84,-162.06) 04/17/2022   22:43:18  (  71.84,-161.99)    2.66                 4
 04/17/2022   23:34:02   ( -71.60,   5.71) 04/17/2022   23:32:49  ( -71.68,   5.37)   14.52                73
 04/20/2022   13:19:43   (  71.89, -21.22) 04/20/2022   13:20:52  (  71.91, -21.27)    2.51                69
 04/20/2022   14:10:26   ( -71.79, 146.28) 04/20/2022   14:10:22  ( -71.80, 146.18)    3.47                 4
 04/20/2022   15:01:04   (  71.36, -45.62) 04/20/2022   14:59:54  (  71.43, -46.80)   42.78                70
 04/23/2022   04:46:49   ( -71.89, -72.98) 04/23/2022   04:47:56  ( -71.92, -73.03)    3.06                67
 04/23/2022   05:37:34   (  71.83,  94.46) 04/23/2022   05:37:23  (  71.81,  94.43)    2.10                11