Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 11 24.  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)
 11/25/2019   10:33:40   (  70.75,  17.89) 11/25/2019   10:34:51  (  70.62,  18.54)   27.87                71
 11/25/2019   11:24:17   ( -70.39,-174.21) 11/25/2019   11:24:23  ( -70.40,-174.16)    2.20                 6
 11/25/2019   12:15:00   (  70.27,  -6.71) 11/25/2019   12:13:50  (  70.30,  -6.66)    3.42                70
 11/28/2019   02:50:07   (  70.83, 133.66) 11/28/2019   02:51:18  (  70.72, 134.57)   35.54                71
 11/28/2019   03:40:42   ( -70.37, -58.27) 11/28/2019   03:40:52  ( -70.39, -58.28)    3.21                10
 11/28/2019   04:31:26   (  70.30, 109.14) 11/28/2019   04:30:19  (  70.29, 109.21)    2.64                67
 11/30/2019   19:06:34   (  70.96,-110.67) 11/30/2019   19:07:44  (  70.83,-109.39)   48.97                70
 11/30/2019   19:57:07   ( -70.39,  57.58) 11/30/2019   19:57:20  ( -70.40,  57.60)    0.63                13
 11/30/2019   20:47:50   (  70.28,-134.92) 11/30/2019   20:46:47  (  70.29,-134.92)    1.19                63
 12/03/2019   11:23:02   (  71.10,   5.00) 12/03/2019   11:24:10  (  71.00,   6.75)   64.29                68
 12/03/2019   12:13:32   ( -70.37, 173.51) 12/03/2019   12:13:49  ( -70.40, 173.48)    3.29                17
 12/03/2019   13:04:16   (  70.31, -19.08) 12/03/2019   13:03:16  (  70.29, -19.03)    2.40                60
 12/06/2019   03:39:30   (  71.24, 120.66) 12/06/2019   03:40:37  (  71.12, 122.82)   78.56                67
 12/06/2019   04:29:58   ( -70.41, -70.65) 12/06/2019   04:30:18  ( -70.42, -70.62)    1.49                20
 12/06/2019   05:20:41   (  70.29,  96.85) 12/06/2019   05:19:45  (  70.30,  96.86)    1.61                56