Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 10 17.  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)
 10/18/2019   01:34:44   ( -69.51, -25.55) 10/18/2019   01:35:53  ( -69.40, -24.09)   58.30                69
 10/18/2019   02:25:16   (  68.78, 142.78) 10/18/2019   02:25:29  (  68.80, 142.78)    2.32                13
 10/18/2019   03:15:57   ( -68.65, -49.73) 10/18/2019   03:15:00  ( -68.63, -49.79)    3.39                57
 10/20/2019   17:51:11   ( -69.56,  90.28) 10/20/2019   17:52:20  ( -69.48,  91.90)   63.46                69
 10/20/2019   18:41:43   (  68.83,-101.39) 10/20/2019   18:41:57  (  68.82,-101.32)    3.14                14
 10/20/2019   19:32:23   ( -68.64,  66.17) 10/20/2019   19:31:28  ( -68.66,  66.11)    2.77                55
 10/23/2019   10:07:39   ( -69.65,-153.97) 10/23/2019   10:08:47  ( -69.55,-152.13)   72.24                68
 10/23/2019   10:58:09   (  68.83,  14.50) 10/23/2019   10:58:25  (  68.83,  14.57)    2.81                16
 10/23/2019   11:48:50   ( -68.69,-178.00) 10/23/2019   11:47:56  ( -68.67,-177.99)    2.04                54
 10/26/2019   02:24:06   ( -69.70, -38.15) 10/26/2019   02:25:14  ( -69.61, -36.17)   77.13                68
 10/26/2019   03:14:35   (  68.82, 130.39) 10/26/2019   03:14:53  (  68.83, 130.45)    2.53                18
 10/26/2019   04:05:16   ( -68.68, -62.10) 10/26/2019   04:04:24  ( -68.68, -62.10)    0.48                52
 10/28/2019   18:40:33   ( -69.80,  77.59) 10/28/2019   18:41:40  ( -69.67,  79.78)   85.55                67
 10/28/2019   19:31:00   (  68.82,-113.71) 10/28/2019   19:31:20  (  68.83,-113.67)    1.78                20
 10/28/2019   20:21:41   ( -68.67,  53.80) 10/28/2019   20:20:51  ( -68.68,  53.77)    1.15                50