Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 6 14.  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)
 06/15/2019   00:09:29   (  70.49, 174.49) 06/15/2019   00:10:11  (  70.51, 174.44)    2.56                42
 06/15/2019   01:00:11   ( -70.42, -18.07) 06/15/2019   00:59:41  ( -70.40, -18.09)    2.06                30
 06/17/2019   16:25:56   (  70.49, -69.63) 06/17/2019   16:26:41  (  70.51, -69.68)    2.76                45
 06/17/2019   17:16:38   ( -70.41,  97.83) 06/17/2019   17:16:11  ( -70.40,  97.80)    1.22                27
 06/20/2019   08:42:23   (  70.50,  46.25) 06/20/2019   08:43:11  (  70.51,  46.20)    2.55                48
 06/20/2019   09:33:05   ( -70.41,-146.28) 06/20/2019   09:32:41  ( -70.41,-146.32)    1.35                24
 06/23/2019   00:58:50   (  70.50, 162.13) 06/23/2019   00:59:41  (  70.51, 162.08)    2.06                51
 06/23/2019   01:49:32   ( -70.40, -30.40) 06/23/2019   01:49:11  ( -70.41, -30.44)    1.60                21
 06/23/2019   02:39:59   (  69.43, 138.37) 06/23/2019   02:38:53  (  69.47, 135.89)   96.95                66
 06/25/2019   17:15:16   (  70.51, -82.00) 06/25/2019   17:16:10  (  70.50, -82.05)    1.97                54
 06/25/2019   18:05:58   ( -70.41,  85.48) 06/25/2019   18:05:40  ( -70.40,  85.44)    1.87                18