Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 9 1.  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   09:13:29   ( -70.48,-141.58) 09/03/2019   09:14:28  ( -70.49,-141.55)    1.31                59
 09/03/2019   10:04:13   (  70.36,  25.92) 09/03/2019   10:03:55  (  70.38,  25.93)    2.59                18
 09/03/2019   10:54:44   ( -69.73,-165.81) 09/03/2019   10:53:34  ( -69.78,-167.29)   57.23                70
 09/06/2019   01:29:55   ( -70.45, -25.65) 09/06/2019   01:30:58  ( -70.46, -25.71)    2.76                63
 09/06/2019   02:20:40   (  70.38, 141.77) 09/06/2019   02:20:25  (  70.35, 141.78)    3.27                15
 09/06/2019   03:11:12   ( -69.81, -50.04) 09/06/2019   03:10:02  ( -69.87, -51.29)   48.30                70
 09/08/2019   17:46:22   ( -70.48,  90.20) 09/08/2019   17:47:27  ( -70.49,  90.22)    2.06                65
 09/08/2019   18:37:06   (  70.36,-102.31) 09/08/2019   18:36:54  (  70.38,-102.30)    2.51                12
 09/08/2019   19:27:41   ( -69.94,  65.65) 09/08/2019   19:26:29  ( -70.01,  64.79)   33.55                72
 09/11/2019   10:02:47   ( -70.45,-153.88) 09/11/2019   10:03:56  ( -70.47,-153.94)    2.90                69
 09/11/2019   10:53:31   (  70.34,  13.61) 09/11/2019   10:53:23  (  70.35,  13.54)    3.35                 8
 09/11/2019   11:44:08   ( -70.02,-178.58) 09/11/2019   11:42:56  ( -70.09,-179.21)   24.88                72
 09/14/2019   02:19:14   ( -70.48, -38.04) 09/14/2019   02:20:25  ( -70.49, -38.02)    1.25                71
 09/14/2019   03:09:58   (  70.37, 129.45) 09/14/2019   03:09:52  (  70.38, 129.45)    0.79                 6
 09/14/2019   04:00:37   ( -70.16, -62.90) 09/14/2019   03:59:23  ( -70.22, -63.14)   11.37                74