Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 10 5.  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)
 10/05/2019   13:21:27   (  70.42, -23.51) 10/05/2019   13:21:50  (  70.41, -23.48)    0.99                23
 10/05/2019   14:12:08   ( -70.30, 143.99) 10/05/2019   14:11:20  ( -70.30, 143.99)    0.27                48
 10/08/2019   05:37:53   (  70.41,  92.39) 10/08/2019   05:38:20  (  70.39,  92.36)    2.30                27
 10/08/2019   06:28:34   ( -70.29,-100.10) 10/08/2019   06:27:50  ( -70.28,-100.17)    2.65                44
 10/10/2019   21:54:19   (  70.40,-151.71) 10/10/2019   21:54:49  (  70.42,-151.72)    1.77                30
 10/10/2019   22:45:01   ( -70.33,  15.73) 10/10/2019   22:44:19  ( -70.31,  15.75)    2.23                42
 10/13/2019   14:10:46   (  70.45, -35.89) 10/13/2019   14:11:18  (  70.44, -35.81)    3.23                32
 10/13/2019   15:01:27   ( -70.31, 131.64) 10/13/2019   15:00:48  ( -70.33, 131.67)    2.14                39
 10/16/2019   06:27:10   (  70.39,  80.09) 10/16/2019   06:27:47  (  70.40,  80.01)    2.93                37
 10/16/2019   07:17:52   ( -70.30,-112.46) 10/16/2019   07:17:17  ( -70.30,-112.51)    2.05                35
 10/18/2019   22:43:37   (  70.44,-164.10) 10/18/2019   22:44:16  (  70.41,-164.09)    3.15                39
 10/18/2019   23:34:18   ( -70.30,   3.44) 10/18/2019   23:33:46  ( -70.31,   3.40)    2.37                32