Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 6 8.  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)
 06/08/2019   19:18:18   (  69.00,-110.61) 06/08/2019   19:19:29  (  68.98,-110.36)   10.18                71
 06/08/2019   20:08:57   ( -68.77,  57.01) 06/08/2019   20:09:01  ( -68.76,  56.99)    1.92                 4
 06/08/2019   20:59:41   (  68.67,-135.54) 06/08/2019   20:58:28  (  68.65,-135.50)    2.73                73
 06/11/2019   11:34:46   (  69.04,   5.21) 06/11/2019   11:35:57  (  68.98,   5.53)   14.23                71
 06/11/2019   12:25:24   ( -68.76, 172.92) 06/11/2019   12:25:29  ( -68.76, 172.89)    1.62                 5
 06/11/2019   13:16:08   (  68.66, -19.64) 06/11/2019   13:14:56  (  68.65, -19.61)    1.49                72
 06/14/2019   03:51:14   (  69.09, 121.03) 06/14/2019   03:52:24  (  69.04, 121.48)   18.70                70
 06/14/2019   04:41:52   ( -68.80, -71.25) 06/14/2019   04:41:57  ( -68.77, -71.23)    3.03                 5
 06/14/2019   05:32:35   (  68.65,  96.25) 06/14/2019   05:31:24  (  68.65,  96.27)    0.82                71
 06/16/2019   20:07:40   (  69.08,-123.08) 06/16/2019   20:08:51  (  69.04,-122.64)   18.06                71
 06/16/2019   20:58:18   ( -68.78,  44.65) 06/16/2019   20:58:24  ( -68.77,  44.66)    1.28                 6
 06/16/2019   21:49:01   (  68.64,-147.86) 06/16/2019   21:47:51  (  68.65,-147.85)    0.62                70
 06/19/2019   12:24:08   (  69.13,  -7.26) 06/19/2019   12:25:19  (  69.03,  -6.76)   22.49                71
 06/19/2019   13:14:45   ( -68.77, 160.55) 06/19/2019   13:14:52  ( -68.77, 160.54)    0.56                 7
 06/19/2019   14:05:28   (  68.64, -31.96) 06/19/2019   14:04:19  (  68.64, -31.97)    0.65                69