Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 4 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)
 04/13/2019   13:32:44   (  68.86, -23.94) 04/13/2019   13:33:29  (  68.86, -23.98)    1.77                45
 04/13/2019   14:23:25   ( -68.74, 143.54) 04/13/2019   14:22:59  ( -68.75, 143.52)    1.86                26
 04/16/2019   05:49:12   (  68.87,  91.93) 04/16/2019   05:49:58  (  68.86,  91.89)    2.18                46
 04/16/2019   06:39:53   ( -68.75,-100.59) 04/16/2019   06:39:28  ( -68.75,-100.61)    0.90                25
 04/18/2019   22:05:40   (  68.88,-152.21) 04/18/2019   22:06:26  (  68.90,-152.18)    2.27                46
 04/18/2019   22:56:21   ( -68.76,  15.27) 04/18/2019   22:55:57  ( -68.74,  15.25)    3.14                24
 04/18/2019   23:46:46   (  67.69,-176.05) 04/18/2019   23:45:39  (  67.73,-178.30)   95.21                67
 04/21/2019   14:22:07   (  68.90, -36.35) 04/21/2019   14:22:54  (  68.88, -36.32)    2.00                47
 04/21/2019   15:12:48   ( -68.78, 131.13) 04/21/2019   15:12:24  ( -68.78, 131.18)    2.31                24
 04/21/2019   16:03:14   (  67.70, -60.19) 04/21/2019   16:02:07  (  67.77, -62.38)   92.58                67
 04/24/2019   06:38:34   (  68.86,  79.58) 04/24/2019   06:39:23  (  68.86,  79.54)    1.69                49
 04/24/2019   07:29:15   ( -68.74,-112.94) 04/24/2019   07:28:53  ( -68.76,-112.96)    2.18                22
 04/24/2019   08:19:42   (  67.72,  55.67) 04/24/2019   08:18:35  (  67.81,  53.55)   90.01                67