Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 9 10.  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)
 09/11/2019   10:02:48   ( -70.50,-153.95) 09/11/2019   10:03:57  ( -70.49,-153.92)    1.80                69
 09/11/2019   10:53:32   (  70.38,  13.55) 09/11/2019   10:53:24  (  70.38,  13.57)    0.95                 8
 09/11/2019   11:44:09   ( -70.07,-178.65) 09/11/2019   11:42:56  ( -70.17,-179.11)   20.11                73
 09/14/2019   02:19:15   ( -70.53, -38.10) 09/14/2019   02:20:27  ( -70.53, -37.98)    4.46                72
 09/14/2019   03:09:58   (  70.36, 129.47) 09/14/2019   03:09:55  (  70.36, 129.42)    2.18                 3
 09/14/2019   04:00:38   ( -70.20, -62.97) 09/14/2019   03:59:26  ( -70.21, -63.18)    7.81                72
 09/16/2019   18:35:45   ( -70.71,  77.49) 09/16/2019   18:36:56  ( -70.63,  78.05)   22.48                71
 09/16/2019   19:26:25   (  70.39,-114.69) 09/16/2019   19:26:26  (  70.36,-114.71)    3.11                 1
 09/16/2019   20:17:06   ( -70.28,  52.79) 09/16/2019   20:15:56  ( -70.26,  52.78)    2.86                70
 09/19/2019   10:52:14   ( -70.84,-166.84) 09/19/2019   10:53:25  ( -70.76,-165.89)   36.17                71
 09/19/2019   11:42:51   (  70.36,   1.23) 09/19/2019   11:42:57  (  70.37,   1.18)    2.20                 6
 09/19/2019   12:33:32   ( -70.26, 168.72) 09/19/2019   12:32:27  ( -70.27, 168.67)    2.49                65
 09/22/2019   03:08:43   ( -71.03, -51.27) 09/22/2019   03:09:52  ( -70.95, -49.72)   56.58                69
 09/22/2019   03:59:17   (  70.40, 117.07) 09/22/2019   03:59:27  (  70.40, 117.09)    0.85                10
 09/22/2019   04:49:58   ( -70.29, -75.44) 09/22/2019   04:48:57  ( -70.30, -75.42)    1.76                61