Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 8 3.  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   06:32:17   ( -72.50, -99.55) 08/04/2022   06:33:27  ( -72.36, -98.33)   43.75                70
 08/04/2022   07:22:55   (  72.03,  68.70) 08/04/2022   07:22:59  (  72.00,  68.68)    2.87                 4
 08/04/2022   08:13:37   ( -71.92,-123.79) 08/04/2022   08:12:28  ( -71.94,-123.80)    1.41                69
 08/06/2022   21:59:20   (  72.40,-151.08) 08/06/2022   22:00:31  (  72.28,-150.22)   31.51                71
 08/06/2022   22:49:57   ( -72.03,  16.95) 08/06/2022   22:50:04  ( -72.01,  16.92)    2.81                 7
 08/06/2022   23:40:41   (  71.92,-175.53) 08/06/2022   23:39:30  (  71.92,-175.60)    2.45                71
 08/09/2022   13:26:23   ( -72.50, 156.98) 08/09/2022   13:27:33  ( -72.39, 158.21)   42.75                70
 08/09/2022   14:17:01   (  72.04, -34.80) 08/09/2022   14:17:05  (  72.03, -34.80)    0.60                 4
 08/09/2022   15:07:43   ( -71.92, 132.74) 08/09/2022   15:06:35  ( -71.92, 132.64)    3.25                68
 08/12/2022   04:53:26   (  72.41, 105.41) 08/12/2022   04:54:37  (  72.30, 106.29)   31.86                71
 08/12/2022   05:44:03   ( -72.03, -86.53) 08/12/2022   05:44:10  ( -72.03, -86.56)    1.25                 7
 08/12/2022   06:34:48   (  71.93,  80.97) 08/12/2022   06:33:37  (  71.93,  80.91)    2.06                71
 08/14/2022   20:20:30   ( -72.50,  53.49) 08/14/2022   20:21:40  ( -72.40,  54.70)   42.11                70
 08/14/2022   21:11:08   (  72.06,-138.32) 08/14/2022   21:11:12  (  72.03,-138.31)    2.56                 4
 08/14/2022   22:01:51   ( -71.98,  29.15) 08/14/2022   22:00:41  ( -71.98,  29.23)    2.70                70