Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 7 17.  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)
 07/18/2019   23:25:11   (  69.63,-173.24) 07/18/2019   23:26:19  (  69.51,-171.43)   71.49                68
 07/19/2019   00:15:39   ( -68.79,  -4.74) 07/19/2019   00:16:00  ( -68.80,  -4.72)    1.36                21
 07/19/2019   01:06:22   (  68.66, 162.74) 07/19/2019   01:05:27  (  68.69, 162.78)    2.98                55
 07/21/2019   15:41:39   (  69.69, -57.44) 07/21/2019   15:42:47  (  69.60, -55.44)   78.15                68
 07/21/2019   16:32:06   ( -68.80, 111.14) 07/21/2019   16:32:30  ( -68.78, 111.13)    2.63                24
 07/21/2019   17:22:49   (  68.67, -81.38) 07/21/2019   17:21:57  (  68.66, -81.38)    1.67                52
 07/24/2019   07:58:08   (  69.81,  58.28) 07/24/2019   07:59:15  (  69.69,  60.56)   89.02                67
 07/24/2019   08:48:33   ( -68.81,-132.99) 07/24/2019   08:48:59  ( -68.82,-132.95)    1.89                26
 07/24/2019   09:39:15   (  68.68,  34.49) 07/24/2019   09:38:25  (  68.70,  34.55)    2.72                50
 07/27/2019   01:04:59   ( -68.82, -17.12) 07/27/2019   01:05:28  ( -68.81, -17.08)    1.64                29
 07/27/2019   01:55:42   (  68.69, 150.36) 07/27/2019   01:54:55  (  68.69, 150.41)    2.02                47
 07/29/2019   17:21:26   ( -68.83,  98.75) 07/29/2019   17:21:58  ( -68.82,  98.80)    2.32                32
 07/29/2019   18:12:09   (  68.70, -93.77) 07/29/2019   18:11:25  (  68.69, -93.71)    2.56                44