Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 6 20.  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)
 06/22/2019   04:40:35   (  69.13, 108.63) 06/22/2019   04:41:47  (  69.02, 109.11)   22.41                72
 06/22/2019   05:31:12   ( -68.78, -83.57) 06/22/2019   05:31:20  ( -68.75, -83.60)    3.26                 8
 06/22/2019   06:21:55   (  68.64,  83.93) 06/22/2019   06:20:47  (  68.63,  83.90)    0.98                68
 06/24/2019   20:57:02   (  69.18,-135.55) 06/24/2019   20:58:13  (  69.06,-134.95)   27.21                71
 06/24/2019   21:47:38   ( -68.77,  32.33) 06/24/2019   21:47:46  ( -68.80,  32.34)    3.31                 8
 06/24/2019   22:38:21   (  68.63,-160.19) 06/24/2019   22:37:14  (  68.62,-160.23)    2.17                67
 06/27/2019   13:13:29   (  69.18, -19.67) 06/27/2019   13:14:40  (  69.11, -19.01)   27.30                71
 06/27/2019   14:04:05   ( -68.76, 148.22) 06/27/2019   14:04:14  ( -68.79, 148.22)    2.91                 9
 06/27/2019   14:54:48   (  68.63, -44.30) 06/27/2019   14:53:41  (  68.66, -44.29)    3.37                67
 06/30/2019   05:29:57   (  69.23,  96.14) 06/30/2019   05:31:08  (  69.09,  96.85)   32.27                71
 06/30/2019   06:20:32   ( -68.76, -95.89) 06/30/2019   06:20:42  ( -68.78, -95.91)    2.41                10
 06/30/2019   07:11:15   (  68.63,  71.58) 06/30/2019   07:10:09  (  68.65,  71.57)    1.68                66
 07/02/2019   21:46:24   (  69.23,-147.98) 07/02/2019   21:47:35  (  69.13,-147.21)   32.30                71
 07/02/2019   22:36:59   ( -68.75,  20.00) 07/02/2019   22:37:10  ( -68.76,  19.95)    2.19                11
 07/02/2019   23:27:42   (  68.64,-172.53) 07/02/2019   23:26:37  (  68.63,-172.56)    1.24                65