Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 9 13.  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)
 09/13/2019   06:00:54   ( -68.86, -91.20) 09/13/2019   06:01:50  ( -68.84, -91.19)    2.35                56
 09/13/2019   06:51:38   (  68.73,  76.28) 09/13/2019   06:51:17  (  68.74,  76.32)    1.94                21
 09/13/2019   07:42:07   ( -68.00,-115.45) 09/13/2019   07:40:57  ( -68.07,-116.86)   59.13                70
 09/15/2019   22:17:20   ( -68.84,  24.72) 09/15/2019   22:18:18  ( -68.87,  24.71)    2.58                58
 09/15/2019   23:08:04   (  68.71,-167.80) 09/15/2019   23:07:46  (  68.70,-167.84)    1.88                18
 09/15/2019   23:58:35   ( -68.08,   0.33) 09/15/2019   23:57:24  ( -68.15,  -0.89)   51.01                71
 09/18/2019   14:33:47   ( -68.87, 140.56) 09/18/2019   14:34:47  ( -68.85, 140.57)    2.95                60
 09/18/2019   15:24:31   (  68.75, -51.96) 09/18/2019   15:24:14  (  68.74, -51.92)    2.01                17
 09/18/2019   16:15:03   ( -68.17, 116.11) 09/18/2019   16:13:52  ( -68.19, 115.04)   44.37                71
 09/21/2019   06:50:12   ( -68.86,-103.53) 09/21/2019   06:51:15  ( -68.85,-103.55)    1.32                63
 09/21/2019   07:40:56   (  68.73,  63.94) 09/21/2019   07:40:42  (  68.74,  63.95)    0.47                14
 09/21/2019   08:31:30   ( -68.26,-128.11) 09/21/2019   08:30:18  ( -68.30,-128.95)   34.71                72
 09/23/2019   23:06:39   ( -68.89,  12.31) 09/23/2019   23:07:44  ( -68.87,  12.34)    3.24                65
 09/23/2019   23:57:22   (  68.72, 179.85) 09/23/2019   23:57:11  (  68.75, 179.85)    3.33                11
 09/24/2019   00:47:58   ( -68.35, -12.34) 09/24/2019   00:46:46  ( -68.37, -12.99)   26.56                72
 09/26/2019   15:23:05   ( -68.88, 128.22) 09/26/2019   15:24:13  ( -68.90, 128.26)    3.02                68
 09/26/2019   16:13:48   (  68.71, -64.25) 09/26/2019   16:13:41  (  68.73, -64.31)    3.03                 7
 09/26/2019   17:04:26   ( -68.44, 103.43) 09/26/2019   17:03:13  ( -68.52, 103.06)   16.93                73