Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 10 3.  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   (  70.38, -23.46) 10/05/2019   13:21:51  (  70.40, -23.50)    2.52                24
 10/05/2019   14:12:09   ( -70.32, 143.96) 10/05/2019   14:11:21  ( -70.29, 143.97)    3.32                48
 10/08/2019   05:37:53   (  70.43,  92.36) 10/08/2019   05:38:19  (  70.43,  92.42)    2.48                26
 10/08/2019   06:28:34   ( -70.31,-100.13) 10/08/2019   06:27:49  ( -70.32,-100.10)    2.16                45
 10/10/2019   21:54:19   (  70.43,-151.75) 10/10/2019   21:54:49  (  70.41,-151.73)    2.23                30
 10/10/2019   22:45:00   ( -70.30,  15.77) 10/10/2019   22:44:19  ( -70.30,  15.74)    1.15                41
 10/13/2019   14:10:45   (  70.42, -35.85) 10/13/2019   14:11:18  (  70.43, -35.82)    1.68                33
 10/13/2019   15:01:27   ( -70.34, 131.59) 10/13/2019   15:00:48  ( -70.33, 131.66)    3.10                39
 10/16/2019   06:27:11   (  70.42,  80.04) 10/16/2019   06:27:48  (  70.40,  80.02)    2.78                37
 10/16/2019   07:17:52   ( -70.28,-112.43) 10/16/2019   07:17:18  ( -70.30,-112.50)    3.16                34