Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 5 5.  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)
 05/07/2019   16:00:51   (  68.87, -61.03) 05/07/2019   16:01:52  (  68.85, -61.09)    3.29                61
 05/07/2019   16:51:32   ( -68.78, 106.42) 05/07/2019   16:51:21  ( -68.79, 106.47)    2.39                11
 05/07/2019   17:42:07   (  68.16, -85.47) 05/07/2019   17:40:56  (  68.24, -86.56)   45.59                71
 05/10/2019   08:17:19   (  68.90,  54.82) 05/10/2019   08:18:20  (  68.90,  54.86)    1.88                61
 05/10/2019   09:07:59   ( -68.74,-137.66) 05/10/2019   09:07:51  ( -68.74,-137.72)    2.67                 8
 05/10/2019   09:58:35   (  68.19,  30.38) 05/10/2019   09:57:25  (  68.24,  29.32)   43.97                70
 05/13/2019   00:33:46   (  68.87, 170.74) 05/13/2019   00:34:49  (  68.90, 170.73)    3.16                63
 05/13/2019   01:24:26   ( -68.77, -21.81) 05/13/2019   01:24:18  ( -68.79, -21.77)    2.64                 8
 05/13/2019   02:15:03   (  68.27, 146.15) 05/13/2019   02:13:52  (  68.29, 145.26)   37.01                71
 05/15/2019   16:50:13   (  68.90, -73.42) 05/15/2019   16:51:17  (  68.88, -73.41)    1.46                64
 05/15/2019   17:40:54   ( -68.79,  94.04) 05/15/2019   17:40:47  ( -68.78,  94.09)    2.50                 7
 05/15/2019   18:31:31   (  68.30, -98.00) 05/15/2019   18:30:20  (  68.33, -98.81)   33.61                71
 05/18/2019   09:06:40   (  68.87,  42.50) 05/18/2019   09:07:46  (  68.86,  42.45)    1.99                66
 05/18/2019   09:57:21   ( -68.76,-150.04) 05/18/2019   09:57:16  ( -68.76,-150.04)    0.30                 5
 05/18/2019   10:47:59   (  68.32,  17.84) 05/18/2019   10:46:47  (  68.42,  17.18)   29.33                72