Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 1.  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)
 08/02/2019   05:05:45   (  71.29,  99.10) 08/02/2019   05:06:52  (  71.21, 101.38)   82.05                67
 08/02/2019   05:56:12   ( -70.42, -92.14) 08/02/2019   05:56:34  ( -70.45, -92.17)    3.24                22
 08/02/2019   06:46:56   (  70.34,  75.30) 08/02/2019   06:46:01  (  70.35,  75.33)    1.36                55
 08/04/2019   21:22:15   (  71.46,-145.32) 08/04/2019   21:23:20  (  71.33,-142.55)   99.16                65
 08/04/2019   22:12:39   ( -70.44,  23.72) 08/04/2019   22:13:04  ( -70.46,  23.73)    2.99                25
 08/04/2019   23:03:23   (  70.36,-168.84) 08/04/2019   23:02:31  (  70.36,-168.78)    2.37                52
 08/07/2019   14:29:05   ( -70.45, 139.58) 08/07/2019   14:29:33  ( -70.47, 139.63)    2.94                28
 08/07/2019   15:19:48   (  70.32, -52.90) 08/07/2019   15:19:01  (  70.31, -52.97)    2.76                47
 08/10/2019   06:45:31   ( -70.42,-104.48) 08/10/2019   06:46:04  ( -70.43,-104.56)    3.26                33
 08/10/2019   07:36:15   (  70.34,  62.96) 08/10/2019   07:35:31  (  70.32,  62.92)    2.60                44
 08/12/2019   23:01:58   ( -70.44,  11.38) 08/12/2019   23:02:34  ( -70.44,  11.33)    1.74                36
 08/12/2019   23:52:42   (  70.36, 178.82) 08/12/2019   23:52:00  (  70.38, 178.89)    3.55                42