Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 15.  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)
 10/17/2020   10:39:46   (  71.16,  16.40) 10/17/2020   10:40:56  (  71.02,  17.61)   46.05                70
 10/17/2020   11:30:19   ( -70.62,-175.38) 10/17/2020   11:30:31  ( -70.63,-175.35)    1.56                12
 10/17/2020   12:21:03   (  70.53,  -7.92) 10/17/2020   12:19:58  (  70.54,  -7.85)    2.70                65
 10/20/2020   02:56:13   (  71.40, 131.89) 10/20/2020   02:57:20  (  71.30, 133.93)   73.69                67
 10/20/2020   03:46:42   ( -70.66, -59.52) 10/20/2020   03:47:00  ( -70.64, -59.46)    2.79                18
 10/20/2020   04:37:25   (  70.51, 108.02) 10/20/2020   04:36:27  (  70.54, 108.03)    2.84                58
 10/22/2020   19:12:38   (  71.60,-112.55) 10/22/2020   19:13:44  (  71.51,-109.83)   96.04                66
 10/22/2020   20:03:03   ( -70.64,  56.43) 10/22/2020   20:03:28  ( -70.64,  56.42)    0.28                25
 10/22/2020   20:53:47   (  70.56,-136.13) 10/22/2020   20:52:55  (  70.54,-136.09)    2.62                52
 10/25/2020   12:19:25   ( -70.62, 172.37) 10/25/2020   12:19:57  ( -70.64, 172.30)    3.02                32
 10/25/2020   13:10:09   (  70.55, -20.20) 10/25/2020   13:09:24  (  70.53, -20.21)    1.72                45
 10/28/2020   04:35:48   ( -70.66, -71.78) 10/28/2020   04:36:25  ( -70.69, -71.75)    2.93                37
 10/28/2020   05:26:31   (  70.54,  95.73) 10/28/2020   05:25:53  (  70.52,  95.66)    3.32                38