Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 17.  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   (  71.14,  16.42) 10/17/2020   10:40:56  (  71.04,  17.64)   45.28                70
 10/17/2020   11:30:19   ( -70.61,-175.37) 10/17/2020   11:30:32  ( -70.59,-175.41)    2.84                13
 10/17/2020   12:21:03   (  70.51,  -7.90) 10/17/2020   12:19:59  (  70.50,  -7.91)    1.97                64
 10/20/2020   02:56:12   (  71.39, 131.91) 10/20/2020   02:57:19  (  71.31, 133.96)   73.49                67
 10/20/2020   03:46:41   ( -70.65, -59.51) 10/20/2020   03:46:59  ( -70.65, -59.44)    2.42                18
 10/20/2020   04:37:24   (  70.50, 108.03) 10/20/2020   04:36:27  (  70.50, 107.97)    2.35                57
 10/22/2020   19:12:39   (  71.65,-112.63) 10/22/2020   19:13:44  (  71.53,-109.81)   99.87                65
 10/22/2020   20:03:03   ( -70.63,  56.43) 10/22/2020   20:03:28  ( -70.65,  56.44)    2.31                25
 10/22/2020   20:53:47   (  70.55,-136.12) 10/22/2020   20:52:55  (  70.55,-136.07)    1.98                52
 10/25/2020   12:19:26   ( -70.67, 172.29) 10/25/2020   12:19:57  ( -70.65, 172.32)    2.72                31
 10/25/2020   13:10:09   (  70.54, -20.19) 10/25/2020   13:09:24  (  70.55, -20.19)    0.32                45
 10/28/2020   04:35:48   ( -70.66, -71.78) 10/28/2020   04:36:26  ( -70.64, -71.81)    2.54                38
 10/28/2020   05:26:31   (  70.54,  95.73) 10/28/2020   05:25:53  (  70.54,  95.67)    2.25                38
 10/30/2020   20:52:09   ( -70.66,  44.15) 10/30/2020   20:52:53  ( -70.69,  44.14)    3.40                44
 10/30/2020   21:42:53   (  70.59,-148.43) 10/30/2020   21:42:20  (  70.58,-148.38)    2.42                33