Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 11 28.  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)
 11/28/2019   02:50:08   (  70.89, 133.57) 11/28/2019   02:51:18  (  70.78, 134.65)   41.42                70
 11/28/2019   03:40:42   ( -70.38, -58.29) 11/28/2019   03:40:53  ( -70.39, -58.30)    1.63                11
 11/28/2019   04:31:26   (  70.30, 109.14) 11/28/2019   04:30:20  (  70.29, 109.20)    2.85                66
 11/30/2019   19:06:36   (  71.02,-110.75) 11/30/2019   19:07:45  (  70.94,-109.23)   55.93                69
 11/30/2019   19:57:08   ( -70.40,  57.57) 11/30/2019   19:57:23  ( -70.39,  57.58)    1.33                15
 11/30/2019   20:47:51   (  70.28,-134.92) 11/30/2019   20:46:50  (  70.28,-134.93)    1.10                61
 12/03/2019   11:23:04   (  71.20,   4.83) 12/03/2019   11:24:11  (  71.11,   6.92)   75.72                67
 12/03/2019   12:13:33   ( -70.43, 173.42) 12/03/2019   12:13:52  ( -70.41, 173.48)    2.82                19
 12/03/2019   13:04:16   (  70.30, -19.07) 12/03/2019   13:03:19  (  70.30, -19.03)    1.29                57
 12/06/2019   03:39:33   (  71.38, 120.41) 12/06/2019   03:40:39  (  71.26, 123.03)   94.23                66
 12/06/2019   04:29:58   ( -70.40, -70.64) 12/06/2019   04:30:23  ( -70.39, -70.67)    1.23                25
 12/06/2019   05:20:41   (  70.27,  96.87) 12/06/2019   05:19:50  (  70.28,  96.82)    2.37                51
 12/08/2019   20:46:24   ( -70.43,  45.21) 12/08/2019   20:46:54  ( -70.40,  45.21)    2.86                30
 12/08/2019   21:37:07   (  70.30,-147.28) 12/08/2019   21:36:21  (  70.29,-147.31)    1.59                46
 12/11/2019   13:02:49   ( -70.41, 161.14) 12/11/2019   13:03:25  ( -70.43, 161.13)    3.02                36
 12/11/2019   13:53:33   (  70.33, -31.43) 12/11/2019   13:52:52  (  70.32, -31.40)    1.67                41