Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 6 22.  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   (  69.14, 108.61) 06/22/2019   04:41:46  (  69.05, 109.16)   23.61                71
 06/22/2019   05:31:12   ( -68.79, -83.60) 06/22/2019   05:31:19  ( -68.78, -83.56)    2.48                 7
 06/22/2019   06:21:55   (  68.65,  83.91) 06/22/2019   06:20:46  (  68.67,  83.95)    2.53                69
 06/24/2019   20:57:02   (  69.14,-135.50) 06/24/2019   20:58:14  (  69.04,-134.98)   23.20                72
 06/24/2019   21:47:39   ( -68.78,  32.30) 06/24/2019   21:47:47  ( -68.76,  32.30)    2.36                 8
 06/24/2019   22:38:22   (  68.64,-160.20) 06/24/2019   22:37:14  (  68.65,-160.19)    0.53                68
 06/27/2019   13:13:29   (  69.18, -19.68) 06/27/2019   13:14:40  (  69.07, -19.06)   27.83                71
 06/27/2019   14:04:05   ( -68.77, 148.20) 06/27/2019   14:04:13  ( -68.80, 148.23)    3.03                 8
 06/27/2019   14:54:48   (  68.64, -44.31) 06/27/2019   14:53:41  (  68.62, -44.34)    2.22                67
 06/30/2019   05:29:56   (  69.18,  96.21) 06/30/2019   05:31:07  (  69.09,  96.86)   27.33                71
 06/30/2019   06:20:32   ( -68.76, -95.90) 06/30/2019   06:20:41  ( -68.77, -95.92)    1.24                 9
 06/30/2019   07:11:15   (  68.63,  71.58) 06/30/2019   07:10:08  (  68.65,  71.58)    1.40                67
 07/02/2019   21:46:23   (  69.17,-147.89) 07/02/2019   21:47:35  (  69.05,-147.31)   26.91                72
 07/02/2019   22:37:00   ( -68.80,  19.93) 07/02/2019   22:37:08  ( -68.79,  20.00)    3.03                 8
 07/02/2019   23:27:42   (  68.63,-172.53) 07/02/2019   23:26:36  (  68.61,-172.59)    3.26                66
 07/05/2019   14:02:51   (  69.22, -32.08) 07/05/2019   14:04:01  (  69.12, -31.33)   31.45                70
 07/05/2019   14:53:26   ( -68.74, 135.90) 07/05/2019   14:53:36  ( -68.75, 135.83)    2.99                10
 07/05/2019   15:44:09   (  68.62, -56.63) 07/05/2019   15:43:03  (  68.62, -56.69)    2.08                66