Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 7 9.  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)
 07/10/2019   22:35:47   (  69.39,-160.55) 07/10/2019   22:36:57  (  69.30,-159.35)   48.11                70
 07/10/2019   23:26:19   ( -68.76,   7.64) 07/10/2019   23:26:35  ( -68.75,   7.58)    2.70                16
 07/11/2019   00:17:02   (  68.64, 175.12) 07/11/2019   00:16:02  (  68.64, 175.09)    1.57                60
 07/13/2019   14:52:14   (  69.45, -44.74) 07/13/2019   14:53:23  (  69.36, -43.39)   53.68                69
 07/13/2019   15:42:45   ( -68.76, 123.53) 07/13/2019   15:43:02  ( -68.76, 123.47)    2.46                17
 07/13/2019   16:33:28   (  68.64, -68.99) 07/13/2019   16:32:29  (  68.64, -69.03)    1.65                59
 07/16/2019   07:08:42   (  69.50,  71.07) 07/16/2019   07:09:51  (  69.36,  72.49)   57.67                69
 07/16/2019   07:59:12   ( -68.76,-120.58) 07/16/2019   07:59:30  ( -68.76,-120.65)    2.71                18
 07/16/2019   08:49:55   (  68.64,  46.89) 07/16/2019   08:48:57  (  68.64,  46.85)    1.77                58
 07/18/2019   23:25:09   (  69.50,-173.04) 07/18/2019   23:26:18  (  69.41,-171.56)   58.71                69
 07/19/2019   00:15:40   ( -68.81,  -4.76) 07/19/2019   00:15:57  ( -68.81,  -4.70)    2.52                17
 07/19/2019   01:06:22   (  68.64, 162.78) 07/19/2019   01:05:25  (  68.63, 162.72)    2.24                57
 07/21/2019   15:41:37   (  69.55, -57.23) 07/21/2019   15:42:45  (  69.45, -55.62)   63.74                68
 07/21/2019   16:32:07   ( -68.81, 111.12) 07/21/2019   16:32:25  ( -68.80, 111.17)    1.92                18
 07/21/2019   17:22:50   (  68.69, -81.41) 07/21/2019   17:21:52  (  68.67, -81.34)    3.05                58