Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 11 19.  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)
 11/20/2019   02:00:45   (  70.51, 146.49) 11/20/2019   02:01:57  (  70.48, 146.57)    4.80                72
 11/20/2019   02:51:26   ( -70.36, -45.95) 11/20/2019   02:51:27  ( -70.37, -45.97)    0.83                 1
 11/20/2019   03:42:08   (  70.19, 121.63) 11/20/2019   03:40:55  (  70.21, 121.45)    6.92                73
 11/22/2019   18:17:13   (  70.64, -97.82) 11/22/2019   18:18:24  (  70.55, -97.45)   17.04                71
 11/22/2019   19:07:52   ( -70.38,  69.92) 11/22/2019   19:07:55  ( -70.38,  69.94)    0.79                 3
 11/22/2019   19:58:35   (  70.27,-122.59) 11/22/2019   19:57:22  (  70.28,-122.57)    1.34                73
 11/25/2019   10:33:39   (  70.71,  17.96) 11/25/2019   10:34:50  (  70.61,  18.52)   23.94                71
 11/25/2019   11:24:17   ( -70.40,-174.22) 11/25/2019   11:24:22  ( -70.39,-174.16)    2.39                 5
 11/25/2019   12:15:00   (  70.29,  -6.73) 11/25/2019   12:13:49  (  70.28,  -6.68)    2.04                71
 11/28/2019   02:50:06   (  70.79, 133.73) 11/28/2019   02:51:17  (  70.66, 134.49)   31.26                71
 11/28/2019   03:40:42   ( -70.37, -58.28) 11/28/2019   03:40:50  ( -70.40, -58.27)    2.78                 8
 11/28/2019   04:31:25   (  70.26, 109.21) 11/28/2019   04:30:17  (  70.28, 109.21)    2.99                68
 11/30/2019   19:06:33   (  70.87,-110.50) 11/30/2019   19:07:43  (  70.77,-109.46)   39.48                70
 11/30/2019   19:57:08   ( -70.39,  57.58) 11/30/2019   19:57:18  ( -70.40,  57.61)    1.27                10
 11/30/2019   20:47:51   (  70.28,-134.93) 11/30/2019   20:46:45  (  70.28,-134.91)    0.81                66