Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 16.  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   (  71.17,  16.38) 10/17/2020   10:40:55  (  71.06,  17.68)   48.31                69
 10/17/2020   11:30:19   ( -70.64,-175.41) 10/17/2020   11:30:31  ( -70.62,-175.38)    2.54                12
 10/17/2020   12:21:03   (  70.54,  -7.94) 10/17/2020   12:19:58  (  70.52,  -7.87)    3.39                65
 10/20/2020   02:56:12   (  71.37, 131.95) 10/20/2020   02:57:20  (  71.28, 133.91)   70.43                68
 10/20/2020   03:46:41   ( -70.62, -59.46) 10/20/2020   03:47:00  ( -70.62, -59.49)    0.93                19
 10/20/2020   04:37:25   (  70.53, 107.99) 10/20/2020   04:36:27  (  70.53, 108.01)    1.07                58
 10/22/2020   19:12:39   (  71.62,-112.58) 10/22/2020   19:13:44  (  71.55,-109.77)   99.15                65
 10/22/2020   20:03:03   ( -70.61,  56.48) 10/22/2020   20:03:29  ( -70.62,  56.40)    3.69                26
 10/22/2020   20:53:47   (  70.52,-136.08) 10/22/2020   20:52:56  (  70.52,-136.11)    1.21                51
 10/25/2020   12:19:25   ( -70.65, 172.33) 10/25/2020   12:19:57  ( -70.62, 172.27)    3.43                32
 10/25/2020   13:10:09   (  70.57, -20.23) 10/25/2020   13:09:23  (  70.57, -20.16)    2.91                46
 10/28/2020   04:35:48   ( -70.69, -71.82) 10/28/2020   04:36:25  ( -70.67, -71.77)    2.64                37
 10/28/2020   05:26:31   (  70.57,  95.69) 10/28/2020   05:25:52  (  70.56,  95.71)    0.90                39