Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 10 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)
 10/10/2019   00:45:22   ( -69.24, -12.84) 10/10/2019   00:46:33  ( -69.17, -12.03)   33.01                71
 10/10/2019   01:35:59   (  68.76, 155.13) 10/10/2019   01:36:05  (  68.79, 155.13)    2.35                 6
 10/10/2019   02:26:40   ( -68.65, -37.40) 10/10/2019   02:25:35  ( -68.68, -37.37)    3.12                65
 10/12/2019   17:01:49   ( -69.34, 102.92) 10/12/2019   17:03:00  ( -69.22, 103.91)   41.48                71
 10/12/2019   17:52:24   (  68.76, -88.98) 10/12/2019   17:52:33  (  68.77, -89.01)    1.74                 9
 10/12/2019   18:43:05   ( -68.64,  78.50) 10/12/2019   18:42:03  ( -68.67,  78.49)    2.79                62
 10/15/2019   09:18:17   ( -69.44,-141.34) 10/15/2019   09:19:27  ( -69.31,-140.09)   50.94                70
 10/15/2019   10:08:51   (  68.82,  26.84) 10/15/2019   10:09:01  (  68.81,  26.91)    2.92                10
 10/15/2019   10:59:31   ( -68.64,-165.60) 10/15/2019   10:58:32  ( -68.65,-165.65)    2.90                59
 10/18/2019   01:34:45   ( -69.54, -25.59) 10/18/2019   01:35:54  ( -69.41, -24.09)   60.65                69
 10/18/2019   02:25:16   (  68.77, 142.80) 10/18/2019   02:25:30  (  68.79, 142.76)    3.06                14
 10/18/2019   03:15:58   ( -68.68, -49.77) 10/18/2019   03:15:00  ( -68.69, -49.73)    1.95                58
 10/20/2019   17:51:12   ( -69.59,  90.22) 10/20/2019   17:52:21  ( -69.50,  91.91)   66.49                69
 10/20/2019   18:41:43   (  68.82,-101.39) 10/20/2019   18:41:58  (  68.82,-101.32)    2.73                15
 10/20/2019   19:32:24   ( -68.68,  66.12) 10/20/2019   19:31:29  ( -68.67,  66.13)    1.44                55