Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 16.  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)
 06/17/2019   16:25:56   (  70.49, -69.62) 06/17/2019   16:26:41  (  70.51, -69.68)    3.39                45
 06/17/2019   17:16:38   ( -70.41,  97.83) 06/17/2019   17:16:11  ( -70.40,  97.79)    1.58                27
 06/20/2019   08:42:24   (  70.54,  46.19) 06/20/2019   08:43:11  (  70.51,  46.20)    3.06                47
 06/20/2019   09:33:05   ( -70.40,-146.27) 06/20/2019   09:32:41  ( -70.40,-146.32)    2.07                24
 06/23/2019   00:58:51   (  70.54, 162.07) 06/23/2019   00:59:41  (  70.51, 162.08)    3.09                50
 06/23/2019   01:49:32   ( -70.39, -30.37) 06/23/2019   01:49:11  ( -70.40, -30.44)    3.00                21
 06/23/2019   02:39:59   (  69.42, 138.40) 06/23/2019   02:38:53  (  69.47, 135.89)   98.07                66
 06/25/2019   17:15:17   (  70.54, -82.04) 06/25/2019   17:16:10  (  70.50, -82.05)    3.55                53
 06/25/2019   18:05:59   ( -70.44,  85.44) 06/25/2019   18:05:39  ( -70.46,  85.52)    3.72                20
 06/25/2019   18:56:27   (  69.52,-105.87) 06/25/2019   18:55:20  (  69.57,-108.09)   86.31                67
 06/28/2019   09:31:44   (  70.54,  33.84) 06/28/2019   09:32:39  (  70.55,  33.91)    2.85                55
 06/28/2019   10:22:26   ( -70.43,-158.67) 06/28/2019   10:22:09  ( -70.45,-158.61)    3.15                17