Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 9 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)
 09/10/2022   06:50:57   ( -72.48,-103.83) 09/10/2022   06:52:08  ( -72.38,-102.94)   31.88                71
 09/10/2022   07:41:36   (  72.12,  64.20) 09/10/2022   07:41:38  (  72.13,  64.25)    1.98                 2
 09/10/2022   08:32:19   ( -72.01,-128.27) 09/10/2022   08:31:08  ( -72.01,-128.32)    1.81                71
 09/12/2022   22:17:59   (  72.48,-155.56) 09/12/2022   22:19:10  (  72.35,-154.74)   30.99                71
 09/12/2022   23:08:37   ( -72.11,  12.49) 09/12/2022   23:08:42  ( -72.13,  12.49)    1.79                 5
 09/12/2022   23:59:21   (  72.01, 180.00) 09/12/2022   23:58:09  (  72.04, 179.97)    3.38                72
 09/15/2022   13:45:03   ( -72.58, 152.52) 09/15/2022   13:46:13  ( -72.45, 153.67)   40.87                70
 09/15/2022   14:35:40   (  72.12, -39.26) 09/15/2022   14:35:44  (  72.14, -39.25)    2.47                 4
 09/15/2022   15:26:24   ( -72.05, 128.18) 09/15/2022   15:25:14  ( -72.03, 128.19)    2.62                70
 09/18/2022   05:12:05   (  72.54, 100.85) 09/18/2022   05:13:15  (  72.45, 101.91)   36.92                70
 09/18/2022   06:02:42   ( -72.11, -90.98) 09/18/2022   06:02:49  ( -72.13, -91.04)    2.42                 7
 09/18/2022   06:53:26   (  72.02,  76.51) 09/18/2022   06:52:16  (  72.03,  76.42)    3.14                70
 09/20/2022   20:39:08   ( -72.59,  49.03) 09/20/2022   20:40:19  ( -72.48,  50.19)   40.73                71
 09/20/2022   21:29:45   (  72.14,-142.76) 09/20/2022   21:29:50  (  72.16,-142.74)    2.81                 5
 09/20/2022   22:20:29   ( -72.06,  24.69) 09/20/2022   22:19:20  ( -72.06,  24.71)    1.15                69
 09/23/2022   12:06:09   (  72.57,  -2.67) 09/23/2022   12:07:19  (  72.50,  -1.52)   39.09                70
 09/23/2022   12:56:46   ( -72.13, 165.51) 09/23/2022   12:56:54  ( -72.13, 165.44)    2.59                 8
 09/23/2022   13:47:30   (  72.04, -27.00) 09/23/2022   13:46:20  (  72.08, -27.01)    3.59                70