Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 11 14.  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)
 11/14/2019   17:27:53   (  70.46, -85.21) 11/14/2019   17:29:01  (  70.47, -85.22)    0.55                68
 11/14/2019   18:18:35   ( -70.36,  82.27) 11/14/2019   18:18:31  ( -70.35,  82.25)    1.30                 4
 11/14/2019   19:09:13   (  69.98,-109.83) 11/14/2019   19:08:01  (  70.08,-110.49)   27.53                72
 11/17/2019   09:44:19   (  70.48,  30.65) 11/17/2019   09:45:29  (  70.49,  30.70)    2.01                70
 11/17/2019   10:35:01   ( -70.38,-161.87) 11/17/2019   10:34:59  ( -70.38,-161.83)    1.33                 2
 11/17/2019   11:25:41   (  70.11,   5.87) 11/17/2019   11:24:28  (  70.16,   5.50)   15.26                73
 11/20/2019   02:00:45   (  70.55, 146.43) 11/20/2019   02:01:56  (  70.51, 146.61)    8.40                71
 11/20/2019   02:51:25   ( -70.34, -45.92) 11/20/2019   02:51:27  ( -70.35, -45.99)    2.79                 2
 11/20/2019   03:42:07   (  70.18, 121.65) 11/20/2019   03:40:55  (  70.18, 121.42)    8.82                72
 11/22/2019   18:17:12   (  70.63, -97.80) 11/22/2019   18:18:23  (  70.58, -97.40)   15.75                71
 11/22/2019   19:07:51   ( -70.37,  69.94) 11/22/2019   19:07:55  ( -70.37,  69.92)    0.84                 4
 11/22/2019   19:58:34   (  70.26,-122.57) 11/22/2019   19:57:22  (  70.26,-122.60)    0.88                72
 11/25/2019   10:33:39   (  70.71,  17.97) 11/25/2019   10:34:51  (  70.59,  18.51)   23.36                72
 11/25/2019   11:24:17   ( -70.39,-174.20) 11/25/2019   11:24:23  ( -70.38,-174.17)    1.28                 6
 11/25/2019   12:15:00   (  70.28,  -6.72) 11/25/2019   12:13:50  (  70.27,  -6.69)    1.53                70
 11/28/2019   02:50:06   (  70.79, 133.73) 11/28/2019   02:51:17  (  70.71, 134.57)   31.65                71