Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 9 12.  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   ( -68.87, -91.21) 09/13/2019   06:01:49  ( -68.88, -91.15)    2.47                55
 09/13/2019   06:51:38   (  68.74,  76.27) 09/13/2019   06:51:17  (  68.72,  76.29)    3.17                21
 09/13/2019   07:42:07   ( -68.01,-115.46) 09/13/2019   07:40:57  ( -68.04,-116.88)   59.47                70
 09/15/2019   22:17:20   ( -68.85,  24.70) 09/15/2019   22:18:17  ( -68.86,  24.71)    1.11                57
 09/15/2019   23:08:04   (  68.73,-167.82) 09/15/2019   23:07:45  (  68.70,-167.85)    3.17                19
 09/15/2019   23:58:34   ( -68.04,   0.39) 09/15/2019   23:57:24  ( -68.09,  -0.95)   56.01                70
 09/18/2019   14:33:46   ( -68.83, 140.62) 09/18/2019   14:34:45  ( -68.84, 140.57)    2.17                59
 09/18/2019   15:24:30   (  68.71, -51.91) 09/18/2019   15:24:12  (  68.73, -51.92)    2.50                18
 09/18/2019   16:15:01   ( -68.07, 116.23) 09/18/2019   16:13:51  ( -68.12, 114.97)   52.60                70
 09/21/2019   06:50:13   ( -68.87,-103.54) 09/21/2019   06:51:12  ( -68.87,-103.51)    1.61                59
 09/21/2019   07:40:56   (  68.70,  64.00) 09/21/2019   07:40:40  (  68.70,  63.93)    2.92                16
 09/21/2019   08:31:28   ( -68.11,-127.93) 09/21/2019   08:30:18  ( -68.15,-129.11)   49.21                70
 09/23/2019   23:06:38   ( -68.85,  12.36) 09/23/2019   23:07:39  ( -68.85,  12.34)    1.28                61
 09/23/2019   23:57:22   (  68.74, 179.83) 09/23/2019   23:57:06  (  68.73, 179.84)    1.28                16
 09/24/2019   00:47:54   ( -68.15, -12.09) 09/24/2019   00:46:43  ( -68.24, -13.13)   43.99                71