Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 11 15.  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)
 11/17/2019   09:44:19   (  70.49,  30.64) 11/17/2019   09:45:29  (  70.48,  30.69)    1.71                70
 11/17/2019   10:35:01   ( -70.38,-161.88) 11/17/2019   10:34:59  ( -70.37,-161.84)    2.05                 2
 11/17/2019   11:25:41   (  70.11,   5.86) 11/17/2019   11:24:28  (  70.15,   5.49)   14.79                73
 11/20/2019   02:00:46   (  70.56, 146.42) 11/20/2019   02:01:57  (  70.50, 146.60)    9.28                71
 11/20/2019   02:51:26   ( -70.35, -45.93) 11/20/2019   02:51:28  ( -70.34, -46.01)    3.29                 2
 11/20/2019   03:42:08   (  70.18, 121.64) 11/20/2019   03:40:55  (  70.23, 121.48)    7.86                73
 11/22/2019   18:17:12   (  70.63, -97.80) 11/22/2019   18:18:23  (  70.57, -97.41)   16.05                71
 11/22/2019   19:07:51   ( -70.37,  69.93) 11/22/2019   19:07:55  ( -70.35,  69.90)    2.08                 4
 11/22/2019   19:58:34   (  70.26,-122.58) 11/22/2019   19:57:22  (  70.24,-122.61)    2.13                72
 11/25/2019   10:33:39   (  70.71,  17.97) 11/25/2019   10:34:50  (  70.64,  18.57)   23.62                71
 11/25/2019   11:24:17   ( -70.39,-174.21) 11/25/2019   11:24:23  ( -70.37,-174.20)    2.77                 6
 11/25/2019   12:15:00   (  70.28,  -6.72) 11/25/2019   12:13:50  (  70.25,  -6.72)    3.12                70
 11/28/2019   02:50:06   (  70.79, 133.73) 11/28/2019   02:51:17  (  70.70, 134.54)   31.41                71
 11/28/2019   03:40:42   ( -70.37, -58.27) 11/28/2019   03:40:51  ( -70.38, -58.30)    1.67                 9
 11/28/2019   04:31:25   (  70.26, 109.21) 11/28/2019   04:30:18  (  70.26, 109.18)    1.50                67