Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 5 3.  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)
 05/04/2019   23:44:24   (  68.91,-176.97) 05/04/2019   23:45:22  (  68.90,-176.91)    2.64                58
 05/05/2019   00:35:04   ( -68.76,  -9.44) 05/05/2019   00:34:52  ( -68.78,  -9.42)    2.28                12
 05/05/2019   01:25:38   (  68.10, 158.73) 05/05/2019   01:24:28  (  68.18, 157.49)   52.25                70
 05/07/2019   16:00:51   (  68.88, -61.05) 05/07/2019   16:01:52  (  68.86, -61.08)    3.10                61
 05/07/2019   16:51:31   ( -68.73, 106.48) 05/07/2019   16:51:22  ( -68.74, 106.41)    2.92                 9
 05/07/2019   17:42:07   (  68.18, -85.49) 05/07/2019   17:40:56  (  68.25, -86.55)   44.36                71
 05/10/2019   08:17:18   (  68.86,  54.86) 05/10/2019   08:18:21  (  68.87,  54.82)    2.30                63
 05/10/2019   09:07:59   ( -68.76,-137.68) 05/10/2019   09:07:51  ( -68.76,-137.69)    0.41                 8
 05/10/2019   09:58:36   (  68.26,  30.28) 05/10/2019   09:57:25  (  68.27,  29.35)   38.45                71
 05/13/2019   00:33:46   (  68.90, 170.70) 05/13/2019   00:34:50  (  68.89, 170.72)    0.84                64
 05/13/2019   01:24:27   ( -68.79, -21.84) 05/13/2019   01:24:20  ( -68.78, -21.79)    2.33                 7
 05/13/2019   02:15:04   (  68.30, 146.12) 05/13/2019   02:13:53  (  68.34, 145.31)   33.53                71
 05/15/2019   16:50:12   (  68.88, -73.39) 05/15/2019   16:51:18  (  68.91, -73.39)    3.23                66
 05/15/2019   17:40:53   ( -68.77,  94.07) 05/15/2019   17:40:49  ( -68.75,  94.05)    2.61                 4
 05/15/2019   18:31:32   (  68.39, -98.11) 05/15/2019   18:30:20  (  68.41, -98.72)   25.06                72