Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 9 8.  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)
 09/10/2019   13:44:28   ( -68.86, 152.92) 09/10/2019   13:45:22  ( -68.87, 152.96)    2.55                54
 09/10/2019   14:35:12   (  68.73, -39.60) 09/10/2019   14:34:50  (  68.71, -39.60)    1.66                22
 09/10/2019   15:25:40   ( -67.94, 128.74) 09/10/2019   15:24:31  ( -67.99, 127.16)   66.06                69
 09/13/2019   06:00:54   ( -68.83, -91.16) 09/13/2019   06:01:50  ( -68.86, -91.18)    3.13                56
 09/13/2019   06:51:38   (  68.70,  76.32) 09/13/2019   06:51:18  (  68.69,  76.26)    2.67                20
 09/13/2019   07:42:07   ( -67.97,-115.41) 09/13/2019   07:40:58  ( -68.03,-116.91)   62.91                69
 09/15/2019   22:17:20   ( -68.86,  24.69) 09/15/2019   22:18:17  ( -68.83,  24.68)    2.78                57
 09/15/2019   23:08:04   (  68.74,-167.84) 09/15/2019   23:07:44  (  68.72,-167.82)    1.78                20
 09/15/2019   23:58:34   ( -68.05,   0.38) 09/15/2019   23:57:24  ( -68.06,  -0.99)   56.64                70
 09/18/2019   14:33:46   ( -68.84, 140.61) 09/18/2019   14:34:44  ( -68.86, 140.59)    2.75                58
 09/18/2019   15:24:30   (  68.72, -51.92) 09/18/2019   15:24:11  (  68.74, -51.91)    3.17                19
 09/18/2019   16:15:01   ( -68.08, 116.23) 09/18/2019   16:13:50  ( -68.14, 114.99)   51.49                71
 09/21/2019   06:50:13   ( -68.87,-103.55) 09/21/2019   06:51:11  ( -68.88,-103.50)    2.39                58
 09/21/2019   07:40:56   (  68.70,  63.99) 09/21/2019   07:40:39  (  68.71,  63.93)    2.49                17
 09/21/2019   08:31:28   ( -68.11,-127.93) 09/21/2019   08:30:17  ( -68.16,-129.10)   48.78                71