Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 5 30.  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)
 05/31/2019   18:28:55   (  68.90, -98.13) 05/31/2019   18:30:06  (  68.91, -98.09)    2.33                71
 05/31/2019   19:19:36   ( -68.79,  69.34) 05/31/2019   19:19:36  ( -68.80,  69.40)    2.94                 0
 05/31/2019   20:10:18   (  68.57,-123.06) 05/31/2019   20:09:05  (  68.58,-123.22)    6.89                73
 06/03/2019   10:45:23   (  68.95,  17.69) 06/03/2019   10:46:34  (  68.93,  17.81)    5.17                71
 06/03/2019   11:36:03   ( -68.78,-174.76) 06/03/2019   11:36:05  ( -68.77,-174.76)    1.47                 2
 06/03/2019   12:26:46   (  68.62,  -7.24) 06/03/2019   12:25:33  (  68.60,  -7.32)    3.87                73
 06/06/2019   03:01:51   (  69.00, 133.51) 06/06/2019   03:03:02  (  68.94, 133.71)    9.95                71
 06/06/2019   03:52:30   ( -68.77, -58.87) 06/06/2019   03:52:33  ( -68.78, -58.86)    1.73                 3
 06/06/2019   04:43:13   (  68.61, 108.65) 06/06/2019   04:42:01  (  68.61, 108.58)    3.12                72
 06/08/2019   19:18:18   (  68.99,-110.61) 06/08/2019   19:19:30  (  68.95,-110.39)    9.56                72
 06/08/2019   20:08:57   ( -68.76,  57.03) 06/08/2019   20:09:02  ( -68.74,  56.97)    2.99                 5
 06/08/2019   20:59:40   (  68.61,-135.46) 06/08/2019   20:58:29  (  68.62,-135.53)    3.14                71
 06/11/2019   11:34:45   (  69.05,   5.20) 06/11/2019   11:35:56  (  69.02,   5.57)   14.97                71
 06/11/2019   12:25:23   ( -68.76, 172.92) 06/11/2019   12:25:29  ( -68.75, 172.87)    2.06                 6
 06/11/2019   13:16:06   (  68.61, -19.58) 06/11/2019   13:14:56  (  68.63, -19.64)    3.25                70