Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 8 4.  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)
 08/04/2022   06:32:16   ( -72.48, -99.51) 08/04/2022   06:33:26  ( -72.38, -98.30)   42.37                70
 08/04/2022   07:22:54   (  72.01,  68.73) 08/04/2022   07:22:58  (  72.02,  68.71)    1.89                 4
 08/04/2022   08:13:37   ( -71.96,-123.86) 08/04/2022   08:12:27  ( -71.96,-123.77)    2.95                70
 08/06/2022   21:59:20   (  72.43,-151.14) 08/06/2022   22:00:30  (  72.31,-150.18)   35.06                70
 08/06/2022   22:49:56   ( -72.01,  16.99) 08/06/2022   22:50:03  ( -72.03,  16.96)    2.08                 7
 08/06/2022   23:40:42   (  71.95,-175.59) 08/06/2022   23:39:30  (  71.94,-175.56)    1.79                72
 08/09/2022   13:26:23   ( -72.48, 157.02) 08/09/2022   13:27:34  ( -72.36, 158.15)   40.15                71
 08/09/2022   14:17:01   (  72.02, -34.76) 08/09/2022   14:17:06  (  72.00, -34.85)    3.43                 5
 08/09/2022   15:07:44   ( -71.95, 132.67) 08/09/2022   15:06:35  ( -71.94, 132.68)    1.31                69
 08/12/2022   04:53:27   (  72.44, 105.35) 08/12/2022   04:54:37  (  72.33, 106.33)   35.40                70
 08/12/2022   05:44:04   ( -72.06, -86.59) 08/12/2022   05:44:10  ( -72.06, -86.52)    2.57                 6
 08/12/2022   06:34:49   (  71.97,  80.91) 08/12/2022   06:33:37  (  71.96,  80.95)    1.79                72
 08/14/2022   20:20:29   ( -72.48,  53.53) 08/14/2022   20:21:40  ( -72.38,  54.66)   39.55                71
 08/14/2022   21:11:07   (  72.04,-138.28) 08/14/2022   21:11:11  (  72.06,-138.26)    3.08                 4
 08/14/2022   22:01:50   ( -71.96,  29.19) 08/14/2022   22:00:41  ( -71.96,  29.18)    0.35                69
 08/17/2022   11:47:32   (  72.41,   1.93) 08/17/2022   11:48:43  (  72.32,   2.81)   31.22                71
 08/17/2022   12:38:10   ( -72.07, 169.91) 08/17/2022   12:38:16  ( -72.06, 169.96)    2.51                 6
 08/17/2022   13:28:54   (  71.94, -22.52) 08/17/2022   13:27:43  (  71.95, -22.58)    2.58                71