Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 29.  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)
 08/31/2019   16:57:02   ( -70.45, 102.58) 08/31/2019   16:57:59  ( -70.45, 102.52)    2.26                57
 08/31/2019   17:47:46   (  70.33, -89.93) 08/31/2019   17:47:26  (  70.35, -90.00)    3.07                20
 08/31/2019   18:38:15   ( -69.60,  78.50) 08/31/2019   18:37:07  ( -69.64,  76.64)   72.23                68
 09/03/2019   09:13:29   ( -70.47,-141.57) 09/03/2019   09:14:28  ( -70.49,-141.55)    1.97                59
 09/03/2019   10:04:13   (  70.35,  25.92) 09/03/2019   10:03:55  (  70.38,  25.93)    2.84                18
 09/03/2019   10:54:44   ( -69.73,-165.80) 09/03/2019   10:53:34  ( -69.78,-167.28)   57.31                70
 09/06/2019   01:29:56   ( -70.50, -25.72) 09/06/2019   01:30:58  ( -70.47, -25.70)    3.12                62
 09/06/2019   02:20:40   (  70.38, 141.77) 09/06/2019   02:20:25  (  70.36, 141.78)    2.52                15
 09/06/2019   03:11:12   ( -69.80, -50.03) 09/06/2019   03:10:02  ( -69.87, -51.28)   48.60                70
 09/08/2019   17:46:22   ( -70.47,  90.21) 09/08/2019   17:47:28  ( -70.44,  90.14)    3.47                66
 09/08/2019   18:37:07   (  70.40,-102.38) 09/08/2019   18:36:54  (  70.38,-102.30)    3.65                13
 09/08/2019   19:27:41   ( -69.93,  65.67) 09/08/2019   19:26:29  ( -70.01,  64.80)   34.23                72
 09/11/2019   10:02:48   ( -70.49,-153.94) 09/11/2019   10:03:56  ( -70.47,-153.93)    1.80                68
 09/11/2019   10:53:32   (  70.38,  13.55) 09/11/2019   10:53:23  (  70.36,  13.54)    2.19                 9
 09/11/2019   11:44:08   ( -70.01,-178.56) 09/11/2019   11:42:56  ( -70.10,-179.20)   26.12                72