Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 9 22.  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)
 09/22/2019   03:59:16   (  70.36, 117.13) 09/22/2019   03:59:23  (  70.38, 117.08)    3.02                 7
 09/22/2019   04:49:57   ( -70.26, -75.40) 09/22/2019   04:48:53  ( -70.27, -75.45)    2.22                64
 09/24/2019   19:25:09   ( -71.04,  64.61) 09/24/2019   19:26:18  ( -70.92,  66.12)   56.26                69
 09/24/2019   20:15:43   (  70.40,-127.04) 09/24/2019   20:15:53  (  70.38,-127.05)    2.64                10
 09/24/2019   21:06:24   ( -70.30,  40.44) 09/24/2019   21:05:23  ( -70.27,  40.42)    3.06                61
 09/27/2019   11:41:37   ( -71.12,-179.65) 09/27/2019   11:42:46  ( -71.02,-177.84)   66.12                69
 09/27/2019   12:32:09   (  70.39, -11.13) 09/27/2019   12:32:23  (  70.37, -11.19)    3.05                14
 09/27/2019   13:22:50   ( -70.28, 156.36) 09/27/2019   13:21:53  ( -70.26, 156.29)    3.03                57
 09/30/2019   03:58:06   ( -71.26, -64.00) 09/30/2019   03:59:13  ( -71.17, -61.73)   82.15                67
 09/30/2019   04:48:36   (  70.43, 104.69) 09/30/2019   04:48:52  (  70.41, 104.75)    3.34                16
 09/30/2019   05:39:17   ( -70.32, -87.81) 09/30/2019   05:38:22  ( -70.31, -87.77)    2.16                55
 10/02/2019   20:14:34   ( -71.40,  51.64) 10/02/2019   20:15:40  ( -71.26,  54.30)   96.11                66
 10/02/2019   21:05:01   (  70.42,-139.41) 10/02/2019   21:05:21  (  70.39,-139.39)    3.29                20
 10/02/2019   21:55:42   ( -70.30,  28.10) 10/02/2019   21:54:51  ( -70.29,  28.09)    1.32                51
 10/05/2019   13:21:27   (  70.42, -23.51) 10/05/2019   13:21:50  (  70.43, -23.46)    2.32                23
 10/05/2019   14:12:08   ( -70.29, 144.00) 10/05/2019   14:11:21  ( -70.27, 143.94)    3.06                47