Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 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)
 09/03/2019   09:13:28   ( -70.44,-141.52) 09/03/2019   09:14:28  ( -70.46,-141.59)    3.40                60
 09/03/2019   10:04:13   (  70.37,  25.89) 09/03/2019   10:03:55  (  70.36,  25.90)    1.98                18
 09/03/2019   10:54:43   ( -69.70,-165.76) 09/03/2019   10:53:34  ( -69.76,-167.32)   60.61                69
 09/06/2019   01:29:55   ( -70.47, -25.67) 09/06/2019   01:30:57  ( -70.49, -25.66)    2.80                62
 09/06/2019   02:20:39   (  70.35, 141.82) 09/06/2019   02:20:25  (  70.33, 141.74)    3.68                14
 09/06/2019   03:11:12   ( -69.83, -50.06) 09/06/2019   03:10:01  ( -69.90, -51.24)   45.88                71
 09/08/2019   17:46:22   ( -70.49,  90.17) 09/08/2019   17:47:27  ( -70.46,  90.18)    3.30                65
 09/08/2019   18:37:06   (  70.38,-102.34) 09/08/2019   18:36:54  (  70.35,-102.34)    2.66                12
 09/08/2019   19:27:40   ( -69.91,  65.71) 09/08/2019   19:26:29  ( -69.98,  64.75)   37.24                71
 09/11/2019   10:02:48   ( -70.47,-153.90) 09/11/2019   10:03:56  ( -70.49,-153.91)    2.04                68
 09/11/2019   10:53:32   (  70.35,  13.59) 09/11/2019   10:53:23  (  70.37,  13.57)    2.32                 9
 09/11/2019   11:44:09   ( -70.04,-178.61) 09/11/2019   11:42:56  ( -70.11,-179.18)   22.96                73
 09/14/2019   02:19:14   ( -70.50, -38.06) 09/14/2019   02:20:24  ( -70.51, -38.00)    2.59                70
 09/14/2019   03:09:58   (  70.39, 129.42) 09/14/2019   03:09:51  (  70.39, 129.48)    2.15                 7
 09/14/2019   04:00:36   ( -70.12, -62.85) 09/14/2019   03:59:23  ( -70.18, -63.19)   14.71                73