Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 9 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)
 09/06/2019   01:29:56   ( -70.49, -25.71) 09/06/2019   01:30:57  ( -70.51, -25.64)    3.46                61
 09/06/2019   02:20:40   (  70.37, 141.79) 09/06/2019   02:20:25  (  70.35, 141.77)    2.25                15
 09/06/2019   03:11:12   ( -69.80, -50.02) 09/06/2019   03:10:02  ( -69.86, -51.30)   49.58                70
 09/08/2019   17:46:21   ( -70.46,  90.23) 09/08/2019   17:47:26  ( -70.48,  90.20)    2.56                65
 09/08/2019   18:37:06   (  70.39,-102.36) 09/08/2019   18:36:53  (  70.37,-102.32)    2.90                13
 09/08/2019   19:27:40   ( -69.92,  65.68) 09/08/2019   19:26:28  ( -69.99,  64.77)   35.51                72
 09/11/2019   10:02:48   ( -70.48,-153.92) 09/11/2019   10:03:55  ( -70.50,-153.89)    2.26                67
 09/11/2019   10:53:32   (  70.36,  13.57) 09/11/2019   10:53:22  (  70.39,  13.59)    2.78                10
 09/11/2019   11:44:08   ( -70.00,-178.54) 09/11/2019   11:42:56  ( -70.06,-179.24)   27.64                72
 09/14/2019   02:19:15   ( -70.50, -38.06) 09/14/2019   02:20:24  ( -70.51, -37.99)    3.10                69
 09/14/2019   03:09:59   (  70.38, 129.42) 09/14/2019   03:09:51  (  70.40, 129.49)    2.88                 8
 09/14/2019   04:00:36   ( -70.07, -62.77) 09/14/2019   03:59:24  ( -70.13, -63.26)   20.01                72
 09/16/2019   18:35:42   ( -70.52,  77.79) 09/16/2019   18:36:53  ( -70.52,  77.91)    4.39                71
 09/16/2019   19:26:25   (  70.36,-114.64) 09/16/2019   19:26:21  (  70.35,-114.70)    2.02                 4
 09/16/2019   20:17:05   ( -70.20,  52.93) 09/16/2019   20:15:52  ( -70.20,  52.71)    8.02                73