Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 7 31.  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   (  71.30,  99.08) 08/02/2019   05:06:52  (  71.20, 101.37)   82.21                67
 08/02/2019   05:56:12   ( -70.43, -92.15) 08/02/2019   05:56:34  ( -70.44, -92.18)    1.79                22
 08/02/2019   06:46:56   (  70.35,  75.28) 08/02/2019   06:46:01  (  70.34,  75.32)    1.73                55
 08/04/2019   21:22:14   (  71.42,-145.23) 08/04/2019   21:23:20  (  71.32,-142.56)   95.41                66
 08/04/2019   22:12:39   ( -70.44,  23.71) 08/04/2019   22:13:04  ( -70.45,  23.72)    1.41                25
 08/04/2019   23:03:23   (  70.36,-168.85) 08/04/2019   23:02:31  (  70.35,-168.79)    2.73                52
 08/07/2019   14:29:06   ( -70.46, 139.58) 08/07/2019   14:29:34  ( -70.46, 139.62)    1.74                28
 08/07/2019   15:19:48   (  70.32, -52.90) 08/07/2019   15:19:00  (  70.36, -52.90)    3.61                48
 08/10/2019   06:45:32   ( -70.47,-104.56) 08/10/2019   06:46:03  ( -70.47,-104.49)    2.69                31
 08/10/2019   07:36:15   (  70.34,  62.96) 08/10/2019   07:35:30  (  70.36,  62.99)    2.83                45
 08/12/2019   23:01:58   ( -70.44,  11.38) 08/12/2019   23:02:34  ( -70.43,  11.32)    2.62                36
 08/12/2019   23:52:42   (  70.36, 178.82) 08/12/2019   23:52:00  (  70.37, 178.88)    2.48                42