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  ( -70.46, 102.52)    2.68                57
 08/31/2019   17:47:47   (  70.38, -90.01) 08/31/2019   17:47:26  (  70.35, -89.99)    3.37                21
 08/31/2019   18:38:15   ( -69.59,  78.51) 08/31/2019   18:37:07  ( -69.64,  76.64)   72.31                68
 09/03/2019   09:13:29   ( -70.47,-141.57) 09/03/2019   09:14:28  ( -70.49,-141.54)    2.81                59
 09/03/2019   10:04:13   (  70.35,  25.92) 09/03/2019   10:03:55  (  70.38,  25.94)    3.37                18
 09/03/2019   10:54:44   ( -69.72,-165.80) 09/03/2019   10:53:34  ( -69.79,-167.28)   57.34                70
 09/06/2019   01:29:56   ( -70.49, -25.72) 09/06/2019   01:30:58  ( -70.47, -25.70)    2.70                62
 09/06/2019   02:20:40   (  70.38, 141.77) 09/06/2019   02:20:25  (  70.36, 141.78)    2.43                15
 09/06/2019   03:11:12   ( -69.80, -50.03) 09/06/2019   03:10:02  ( -69.88, -51.28)   48.51                70
 09/08/2019   17:46:22   ( -70.47,  90.21) 09/08/2019   17:47:28  ( -70.45,  90.15)    3.26                66
 09/08/2019   18:37:06   (  70.36,-102.30) 09/08/2019   18:36:54  (  70.39,-102.30)    3.46                12
 09/08/2019   19:27:41   ( -69.94,  65.66) 09/08/2019   19:26:29  ( -70.02,  64.80)   33.96                72
 09/11/2019   10:02:48   ( -70.50,-153.95) 09/11/2019   10:03:56  ( -70.48,-153.93)    2.44                68
 09/11/2019   10:53:32   (  70.38,  13.54) 09/11/2019   10:53:23  (  70.36,  13.54)    3.07                 9
 09/11/2019   11:44:08   ( -70.02,-178.57) 09/11/2019   11:42:56  ( -70.10,-179.20)   25.52                72