Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 9 2.  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)
 09/04/2020   13:26:53   ( -70.63, 155.33) 09/04/2020   13:27:47  ( -70.63, 155.30)    1.01                54
 09/04/2020   14:17:37   (  70.52, -37.19) 09/04/2020   14:17:14  (  70.52, -37.21)    0.85                23
 09/04/2020   15:08:04   ( -69.68, 131.42) 09/04/2020   15:06:56  ( -69.76, 129.33)   81.37                68
 09/07/2020   05:43:16   ( -70.64, -88.78) 09/07/2020   05:44:17  ( -70.64, -88.80)    1.06                61
 09/07/2020   06:34:00   (  70.53,  78.71) 09/07/2020   06:33:44  (  70.53,  78.69)    0.93                16
 09/07/2020   07:24:32   ( -69.95,-113.07) 09/07/2020   07:23:22  ( -69.99,-114.47)   53.29                70
 09/09/2020   21:59:39   ( -70.65,  27.12) 09/09/2020   22:00:47  ( -70.66,  27.10)    1.41                68
 09/09/2020   22:50:23   (  70.54,-165.40) 09/09/2020   22:50:14  (  70.55,-165.42)    1.02                 9
 09/09/2020   23:41:00   ( -70.23,   2.42) 09/09/2020   23:39:47  ( -70.28,   1.83)   23.24                73
 09/12/2020   14:16:04   ( -70.76, 142.84) 09/12/2020   14:17:16  ( -70.73, 143.09)    9.72                72
 09/12/2020   15:06:46   (  70.55, -49.50) 09/12/2020   15:06:44  (  70.56, -49.52)    0.95                 2
 09/12/2020   15:57:27   ( -70.45, 117.99) 09/12/2020   15:56:14  ( -70.46, 117.96)    1.68                73
 09/15/2020   06:32:31   ( -71.04,-101.70) 09/15/2020   06:33:42  ( -70.90,-100.77)   36.85                71
 09/15/2020   07:23:08   (  70.57,  66.39) 09/15/2020   07:23:13  (  70.57,  66.37)    0.79                 5
 09/15/2020   08:13:49   ( -70.46,-126.12) 09/15/2020   08:12:43  ( -70.47,-126.14)    1.58                66