Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 27.  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)
 08/29/2019   00:40:36   ( -70.47, -13.34) 08/29/2019   00:41:29  ( -70.48, -13.32)    1.55                53
 08/29/2019   01:31:20   (  70.36, 154.15) 08/29/2019   01:30:56  (  70.38, 154.17)    2.56                24
 08/29/2019   02:21:47   ( -69.51, -37.27) 08/29/2019   02:20:39  ( -69.56, -39.35)   81.21                68
 08/31/2019   16:57:02   ( -70.44, 102.59) 08/31/2019   16:57:59  ( -70.46, 102.53)    3.03                57
 08/31/2019   17:47:47   (  70.38, -90.01) 08/31/2019   17:47:26  (  70.36, -89.98)    2.95                21
 08/31/2019   18:38:15   ( -69.59,  78.51) 08/31/2019   18:37:07  ( -69.65,  76.65)   72.04                68
 09/03/2019   09:13:29   ( -70.47,-141.57) 09/03/2019   09:14:29  ( -70.44,-141.61)    3.32                60
 09/03/2019   10:04:13   (  70.36,  25.92) 09/03/2019   10:03:56  (  70.33,  25.87)    3.30                17
 09/03/2019   10:54:44   ( -69.73,-165.80) 09/03/2019   10:53:34  ( -69.79,-167.27)   56.94                70
 09/06/2019   01:29:56   ( -70.50, -25.73) 09/06/2019   01:30:58  ( -70.48, -25.69)    2.90                62
 09/06/2019   02:20:40   (  70.39, 141.76) 09/06/2019   02:20:25  (  70.36, 141.79)    2.87                15
 09/06/2019   03:11:12   ( -69.81, -50.03) 09/06/2019   03:10:02  ( -69.88, -51.27)   47.91                70
 09/08/2019   17:46:21   ( -70.48,  90.20) 09/08/2019   17:47:27  ( -70.45,  90.16)    3.20                66
 09/08/2019   18:37:05   (  70.36,-102.32) 09/08/2019   18:36:53  (  70.39,-102.29)    2.86                12
 09/08/2019   19:27:40   ( -69.94,  65.65) 09/08/2019   19:26:28  ( -70.02,  64.81)   33.07                72