Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 10 11.  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)
 10/13/2019   14:10:44   (  70.40, -35.81) 10/13/2019   14:11:18  (  70.39, -35.88)    2.84                34
 10/13/2019   15:01:26   ( -70.32, 131.62) 10/13/2019   15:00:47  ( -70.33, 131.67)    1.98                39
 10/16/2019   06:27:10   (  70.39,  80.09) 10/16/2019   06:27:47  (  70.41,  80.03)    3.23                37
 10/16/2019   07:17:52   ( -70.31,-112.47) 10/16/2019   07:17:17  ( -70.30,-112.50)    1.51                35
 10/18/2019   22:43:37   (  70.44,-164.10) 10/18/2019   22:44:16  (  70.43,-164.06)    1.81                39
 10/18/2019   23:34:18   ( -70.31,   3.43) 10/18/2019   23:33:46  ( -70.33,   3.41)    2.31                32
 10/21/2019   15:00:03   (  70.44, -48.21) 10/21/2019   15:00:45  (  70.45, -48.16)    2.12                42
 10/21/2019   15:50:45   ( -70.35, 119.25) 10/21/2019   15:50:15  ( -70.34, 119.32)    2.69                30
 10/24/2019   07:16:28   (  70.44,  67.68) 10/24/2019   07:17:13  (  70.46,  67.74)    3.34                45
 10/24/2019   08:07:10   ( -70.35,-124.85) 10/24/2019   08:06:43  ( -70.36,-124.78)    3.05                27