Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 7 15.  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)
 07/16/2019   07:08:43   (  69.56,  70.99) 07/16/2019   07:09:52  (  69.43,  72.58)   63.57                69
 07/16/2019   07:59:12   ( -68.77,-120.59) 07/16/2019   07:59:32  ( -68.77,-120.64)    2.10                20
 07/16/2019   08:49:55   (  68.64,  46.89) 07/16/2019   08:48:59  (  68.66,  46.87)    2.01                56
 07/18/2019   23:25:12   (  69.67,-173.29) 07/18/2019   23:26:20  (  69.57,-171.37)   75.58                68
 07/19/2019   00:15:39   ( -68.78,  -4.72) 07/19/2019   00:16:02  ( -68.80,  -4.73)    2.46                23
 07/19/2019   01:06:22   (  68.65, 162.76) 07/19/2019   01:05:30  (  68.63, 162.70)    3.30                52
 07/21/2019   15:41:41   (  69.84, -57.66) 07/21/2019   15:42:47  (  69.76, -55.24)   93.37                66
 07/21/2019   16:32:05   ( -68.78, 111.16) 07/21/2019   16:32:33  ( -68.77, 111.10)    2.94                28
 07/21/2019   17:22:48   (  68.66, -81.37) 07/21/2019   17:22:00  (  68.66, -81.40)    1.41                48
 07/24/2019   08:48:32   ( -68.80,-132.97) 07/24/2019   08:49:05  ( -68.79,-133.01)    1.36                33
 07/24/2019   09:39:15   (  68.67,  34.50) 07/24/2019   09:38:32  (  68.68,  34.50)    0.65                43
 07/27/2019   01:04:59   ( -68.81, -17.11) 07/27/2019   01:05:38  ( -68.82, -17.12)    0.90                39
 07/27/2019   01:55:42   (  68.69, 150.37) 07/27/2019   01:55:05  (  68.70, 150.38)    1.44                37