Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 6 13.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/14/2019   03:51:13   (  69.09, 121.04) 06/14/2019   03:52:23  (  69.04, 121.49)   18.60                70
 06/14/2019   04:41:50   ( -68.75, -71.18) 06/14/2019   04:41:56  ( -68.77, -71.23)    2.81                 6
 06/14/2019   05:32:34   (  68.65,  96.26) 06/14/2019   05:31:23  (  68.66,  96.28)    1.33                71
 06/16/2019   20:07:40   (  69.08,-123.08) 06/16/2019   20:08:51  (  69.04,-122.63)   18.34                71
 06/16/2019   20:58:18   ( -68.79,  44.64) 06/16/2019   20:58:24  ( -68.77,  44.66)    2.97                 6
 06/16/2019   21:49:01   (  68.65,-147.86) 06/16/2019   21:47:51  (  68.65,-147.84)    0.69                70
 06/19/2019   12:24:08   (  69.14,  -7.27) 06/19/2019   12:25:19  (  69.03,  -6.76)   23.53                71
 06/19/2019   13:14:45   ( -68.79, 160.53) 06/19/2019   13:14:52  ( -68.76, 160.53)    2.89                 7
 06/19/2019   14:05:28   (  68.65, -31.97) 06/19/2019   14:04:19  (  68.64, -31.97)    0.84                69
 06/22/2019   04:40:35   (  69.14, 108.61) 06/22/2019   04:41:46  (  69.07, 109.17)   23.69                71
 06/22/2019   05:31:12   ( -68.78, -83.58) 06/22/2019   05:31:19  ( -68.81, -83.53)    3.25                 7
 06/22/2019   06:21:55   (  68.65,  83.91) 06/22/2019   06:20:47  (  68.63,  83.89)    2.86                68
 06/24/2019   20:57:01   (  69.15,-135.51) 06/24/2019   20:58:13  (  69.05,-134.97)   24.13                72
 06/24/2019   21:47:38   ( -68.78,  32.30) 06/24/2019   21:47:46  ( -68.79,  32.34)    1.55                 8
 06/24/2019   22:38:21   (  68.66,-160.22) 06/24/2019   22:37:13  (  68.66,-160.18)    1.74                68