Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 6 12.  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   (  69.04, 121.10) 06/14/2019   03:52:25  (  68.98, 121.40)   13.94                72
 06/14/2019   04:41:51   ( -68.75, -71.19) 06/14/2019   04:41:57  ( -68.76, -71.24)    2.04                 6
 06/14/2019   05:32:35   (  68.66,  96.25) 06/14/2019   05:31:24  (  68.65,  96.27)    1.32                71
 06/16/2019   20:07:40   (  69.09,-123.08) 06/16/2019   20:08:51  (  69.03,-122.65)   18.51                71
 06/16/2019   20:58:17   ( -68.74,  44.71) 06/16/2019   20:58:24  ( -68.76,  44.65)    3.38                 7
 06/16/2019   21:49:01   (  68.65,-147.86) 06/16/2019   21:47:51  (  68.64,-147.85)    0.83                70
 06/19/2019   12:24:08   (  69.14,  -7.27) 06/19/2019   12:25:19  (  69.03,  -6.77)   23.36                71
 06/19/2019   13:14:45   ( -68.78, 160.53) 06/19/2019   13:14:52  ( -68.76, 160.53)    2.62                 7
 06/19/2019   14:05:28   (  68.65, -31.97) 06/19/2019   14:04:19  (  68.64, -31.98)    0.90                69
 06/22/2019   04:40:35   (  69.13, 108.62) 06/22/2019   04:41:46  (  69.07, 109.18)   23.00                71
 06/22/2019   05:31:12   ( -68.77, -83.57) 06/22/2019   05:31:20  ( -68.76, -83.60)    2.25                 8
 06/22/2019   06:21:55   (  68.64,  83.92) 06/22/2019   06:20:47  (  68.63,  83.90)    1.59                68
 06/24/2019   20:57:03   (  69.19,-135.57) 06/24/2019   20:58:14  (  69.06,-134.95)   27.79                71
 06/24/2019   21:47:39   ( -68.77,  32.33) 06/24/2019   21:47:48  ( -68.75,  32.28)    2.63                 9
 06/24/2019   22:38:22   (  68.64,-160.20) 06/24/2019   22:37:15  (  68.62,-160.23)    2.69                67