Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 4 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)
 04/16/2019   05:49:12   (  68.89,  91.90) 04/16/2019   05:49:59  (  68.86,  91.90)    3.41                47
 04/16/2019   06:39:52   ( -68.72,-100.56) 04/16/2019   06:39:29  ( -68.75,-100.61)    3.30                23
 04/16/2019   07:30:19   (  67.70,  68.06) 04/16/2019   07:29:12  (  67.75,  65.84)   93.64                67
 04/18/2019   22:05:40   (  68.90,-152.24) 04/18/2019   22:06:29  (  68.88,-152.21)    3.08                49
 04/18/2019   22:56:21   ( -68.79,  15.23) 04/18/2019   22:55:59  ( -68.77,  15.29)    3.27                22
 04/18/2019   23:46:48   (  67.76,-176.14) 04/18/2019   23:45:41  (  67.82,-178.20)   86.83                67
 04/21/2019   14:22:07   (  68.86, -36.30) 04/21/2019   14:23:00  (  68.86, -36.36)    2.22                53
 04/21/2019   15:12:48   ( -68.75, 131.17) 04/21/2019   15:12:30  ( -68.75, 131.14)    1.20                18
 04/21/2019   16:03:18   (  67.88, -60.41) 04/21/2019   16:02:10  (  67.92, -62.22)   75.80                68
 04/24/2019   06:38:34   (  68.88,  79.56) 04/24/2019   06:39:30  (  68.86,  79.52)    2.21                56
 04/24/2019   07:29:15   ( -68.76,-112.97) 04/24/2019   07:29:00  ( -68.76,-112.98)    0.71                15
 04/24/2019   08:19:47   (  68.01,  55.32) 04/24/2019   08:18:38  (  68.03,  53.79)   63.82                69
 04/26/2019   22:55:02   (  68.89,-164.58) 04/26/2019   22:56:01  (  68.89,-164.58)    0.53                59
 04/26/2019   23:45:43   ( -68.78,   2.89) 04/26/2019   23:45:31  ( -68.79,   2.92)    1.50                12
 04/27/2019   00:36:17   (  68.13, 171.04) 04/27/2019   00:35:07  (  68.17, 169.82)   50.89                70