Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 9 6.  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)
 09/07/2020   05:43:16   ( -70.64, -88.77) 09/07/2020   05:44:17  ( -70.64, -88.81)    1.12                61
 09/07/2020   06:34:00   (  70.53,  78.71) 09/07/2020   06:33:44  (  70.53,  78.68)    1.19                16
 09/07/2020   07:24:32   ( -69.95,-113.07) 09/07/2020   07:23:22  ( -69.99,-114.47)   53.60                70
 09/09/2020   21:59:39   ( -70.65,  27.12) 09/09/2020   22:00:47  ( -70.65,  27.09)    1.12                68
 09/09/2020   22:50:23   (  70.54,-165.40) 09/09/2020   22:50:14  (  70.54,-165.43)    1.22                 9
 09/09/2020   23:40:59   ( -70.18,   2.50) 09/09/2020   23:39:47  ( -70.27,   1.81)   28.08                72
 09/12/2020   14:16:04   ( -70.77, 142.84) 09/12/2020   14:17:16  ( -70.71, 143.06)   10.44                72
 09/12/2020   15:06:46   (  70.56, -49.50) 09/12/2020   15:06:44  (  70.54, -49.54)    1.94                 2
 09/12/2020   15:57:27   ( -70.45, 117.98) 09/12/2020   15:56:14  ( -70.44, 117.94)    1.87                73
 09/15/2020   06:32:30   ( -70.99,-101.62) 09/15/2020   06:33:41  ( -70.93,-100.72)   33.32                71
 09/15/2020   07:23:08   (  70.57,  66.38) 09/15/2020   07:23:12  (  70.60,  66.42)    3.36                 4
 09/15/2020   08:13:49   ( -70.47,-126.13) 09/15/2020   08:12:43  ( -70.45,-126.18)    2.95                66
 09/17/2020   22:48:58   ( -71.27,  13.82) 09/17/2020   22:50:07  ( -71.15,  15.50)   61.61                69
 09/17/2020   23:39:31   (  70.59,-177.73) 09/17/2020   23:39:42  (  70.60,-177.70)    1.34                11
 09/18/2020   00:30:12   ( -70.48, -10.24) 09/18/2020   00:29:12  ( -70.50, -10.22)    2.08                60