Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 7 9.  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)
 07/10/2020   06:01:27   ( -70.62, -93.48) 07/10/2020   06:02:28  ( -70.63, -93.44)    1.95                61
 07/10/2020   06:52:10   (  70.51,  74.02) 07/10/2020   06:51:56  (  70.48,  73.98)    3.33                14
 07/10/2020   07:42:43   ( -69.94,-117.78) 07/10/2020   07:41:33  ( -69.98,-119.11)   50.71                70
 07/12/2020   22:17:50   ( -70.61,  22.46) 07/12/2020   22:18:59  ( -70.59,  22.38)    3.51                69
 07/12/2020   23:08:33   (  70.49,-170.05) 07/12/2020   23:08:26  (  70.49,-170.13)    2.99                 7
 07/12/2020   23:59:11   ( -70.18,  -2.24) 07/12/2020   23:57:59  ( -70.21,  -2.90)   24.83                72
 07/15/2020   14:34:16   ( -70.74, 138.14) 07/15/2020   14:35:27  ( -70.71, 138.43)   11.59                71
 07/15/2020   15:24:57   (  70.53, -54.20) 07/15/2020   15:24:55  (  70.55, -54.16)    2.36                 2
 07/15/2020   16:15:39   ( -70.43, 113.28) 07/15/2020   16:14:25  ( -70.44, 113.31)    1.76                74
 07/18/2020   06:50:42   ( -70.93,-106.26) 07/18/2020   06:51:54  ( -70.82,-105.51)   30.29                72
 07/18/2020   07:41:20   (  70.57,  61.65) 07/18/2020   07:41:24  (  70.55,  61.73)    3.50                 4
 07/18/2020   08:32:02   ( -70.46,-130.86) 07/18/2020   08:30:54  ( -70.45,-130.80)    2.97                68
 07/20/2020   23:07:10   ( -71.18,   9.23) 07/20/2020   23:08:19  ( -71.10,  10.80)   57.07                69
 07/20/2020   23:57:43   (  70.55, 177.59) 07/20/2020   23:57:54  (  70.55, 177.61)    0.93                11
 07/21/2020   00:48:25   ( -70.44, -14.92) 07/21/2020   00:47:24  ( -70.45, -14.91)    0.76                61