Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 5 28.  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)
 05/29/2019   02:12:28   (  68.87, 146.03) 05/29/2019   02:13:39  (  68.88, 145.99)    2.59                71
 05/29/2019   03:03:09   ( -68.77, -46.51) 05/29/2019   03:03:09  ( -68.77, -46.52)    0.67                 0
 05/29/2019   03:53:51   (  68.54, 121.10) 05/29/2019   03:52:38  (  68.55, 120.86)   10.23                73
 05/31/2019   18:28:56   (  68.91, -98.14) 05/31/2019   18:30:07  (  68.90, -98.11)    1.62                71
 05/31/2019   19:19:37   ( -68.80,  69.32) 05/31/2019   19:19:37  ( -68.79,  69.39)    2.78                 0
 05/31/2019   20:10:18   (  68.52,-123.00) 05/31/2019   20:09:06  (  68.57,-123.24)   11.08                72
 06/03/2019   10:45:23   (  68.95,  17.68) 06/03/2019   10:46:34  (  68.91,  17.79)    6.32                71
 06/03/2019   11:36:03   ( -68.79,-174.77) 06/03/2019   11:36:04  ( -68.81,-174.71)    3.24                 1
 06/03/2019   12:26:45   (  68.57,  -7.17) 06/03/2019   12:25:33  (  68.58,  -7.35)    7.14                72
 06/06/2019   03:01:50   (  68.95, 133.57) 06/06/2019   03:03:02  (  68.92, 133.68)    5.23                72
 06/06/2019   03:52:30   ( -68.77, -58.87) 06/06/2019   03:52:33  ( -68.76, -58.89)    1.59                 3
 06/06/2019   04:43:13   (  68.62, 108.65) 06/06/2019   04:42:00  (  68.64, 108.61)    3.17                73
 06/08/2019   19:18:18   (  69.00,-110.61) 06/08/2019   19:19:29  (  68.97,-110.37)    9.80                71
 06/08/2019   20:08:57   ( -68.76,  57.03) 06/08/2019   20:09:01  ( -68.76,  57.00)    1.25                 4
 06/08/2019   20:59:41   (  68.66,-135.53) 06/08/2019   20:58:28  (  68.64,-135.51)    2.83                73