Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 5 22.  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)
 05/23/2019   17:39:34   (  68.86, -85.73) 05/23/2019   17:40:43  (  68.86, -85.80)    2.76                69
 05/23/2019   18:30:15   ( -68.77,  81.72) 05/23/2019   18:30:13  ( -68.75,  81.69)    2.18                 2
 05/23/2019   19:20:55   (  68.42,-110.52) 05/23/2019   19:19:43  (  68.48,-111.00)   20.37                72
 05/26/2019   09:56:02   (  68.90,  30.11) 05/26/2019   09:57:11  (  68.88,  30.11)    1.61                69
 05/26/2019   10:46:43   ( -68.79,-162.43) 05/26/2019   10:46:41  ( -68.77,-162.39)    2.71                 2
 05/26/2019   11:37:23   (  68.46,   5.32) 05/26/2019   11:36:11  (  68.50,   4.91)   17.18                72
 05/29/2019   02:12:28   (  68.88, 146.01) 05/29/2019   02:13:38  (  68.90, 146.01)    2.06                70
 05/29/2019   03:03:09   ( -68.77, -46.52) 05/29/2019   03:03:08  ( -68.79, -46.49)    2.87                 1
 05/29/2019   03:53:50   (  68.50, 121.15) 05/29/2019   03:52:37  (  68.57, 120.88)   13.81                73
 05/31/2019   18:28:56   (  68.92, -98.15) 05/31/2019   18:30:06  (  68.91, -98.10)    2.55                70
 05/31/2019   19:19:36   ( -68.75,  69.39) 05/31/2019   19:19:37  ( -68.75,  69.34)    2.23                 1
 05/31/2019   20:10:18   (  68.53,-123.01) 05/31/2019   20:09:05  (  68.58,-123.23)   10.14                73
 06/03/2019   10:45:23   (  68.90,  17.75) 06/03/2019   10:46:34  (  68.91,  17.79)    1.78                71
 06/03/2019   11:36:04   ( -68.78,-174.77) 06/03/2019   11:36:05  ( -68.76,-174.77)    2.54                 1
 06/03/2019   12:26:46   (  68.57,  -7.18) 06/03/2019   12:25:33  (  68.58,  -7.35)    6.88                73