Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 10 9.  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)
 10/10/2019   21:54:19   (  70.42,-151.74) 10/10/2019   21:54:49  (  70.41,-151.74)    1.80                30
 10/10/2019   22:45:00   ( -70.30,  15.77) 10/10/2019   22:44:19  ( -70.29,  15.73)    1.87                41
 10/13/2019   14:10:45   (  70.42, -35.85) 10/13/2019   14:11:18  (  70.43, -35.83)    1.32                33
 10/13/2019   15:01:26   ( -70.29, 131.67) 10/13/2019   15:00:48  ( -70.32, 131.64)    3.04                38
 10/16/2019   06:27:11   (  70.42,  80.04) 10/16/2019   06:27:48  (  70.40,  80.00)    3.11                37
 10/16/2019   07:17:53   ( -70.34,-112.52) 10/16/2019   07:17:17  ( -70.34,-112.44)    2.83                36
 10/18/2019   22:43:36   (  70.43,-164.08) 10/18/2019   22:44:16  (  70.42,-164.09)    1.30                40
 10/18/2019   23:34:17   ( -70.29,   3.46) 10/18/2019   23:33:46  ( -70.31,   3.39)    3.49                31
 10/21/2019   15:00:02   (  70.44, -48.20) 10/21/2019   15:00:45  (  70.43, -48.18)    0.69                43
 10/21/2019   15:50:44   ( -70.34, 119.26) 10/21/2019   15:50:15  ( -70.33, 119.30)    2.07                29