Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 12 6.  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)
 12/07/2019   23:37:23   (  68.92,-175.44) 12/07/2019   23:38:34  (  68.87,-175.34)    6.74                71
 12/08/2019   00:28:03   ( -68.74,  -7.87) 12/08/2019   00:28:04  ( -68.76,  -7.85)    2.55                 1
 12/08/2019   01:18:45   (  68.54, 159.70) 12/08/2019   01:17:33  (  68.54, 159.53)    7.03                72
 12/10/2019   15:53:49   (  69.01, -59.66) 12/10/2019   15:55:00  (  68.97, -59.33)   13.77                71
 12/10/2019   16:44:28   ( -68.77, 107.98) 12/10/2019   16:44:32  ( -68.75, 108.02)    3.11                 4
 12/10/2019   17:35:11   (  68.63, -84.52) 12/10/2019   17:33:59  (  68.64, -84.47)    2.53                72
 12/13/2019   08:10:16   (  69.10,  56.11) 12/13/2019   08:11:28  (  69.01,  56.60)   21.71                72
 12/13/2019   09:00:53   ( -68.76,-136.10) 12/13/2019   09:01:01  ( -68.73,-136.11)    2.59                 8
 12/13/2019   09:51:36   (  68.61,  31.40) 12/13/2019   09:50:28  (  68.62,  31.39)    1.52                68
 12/16/2019   00:26:44   (  69.24, 171.81) 12/16/2019   00:27:55  (  69.09, 172.59)   35.10                71
 12/16/2019   01:17:18   ( -68.74, -20.18) 12/16/2019   01:17:29  ( -68.77, -20.19)    2.79                11
 12/16/2019   02:08:02   (  68.65, 147.25) 12/16/2019   02:06:56  (  68.65, 147.32)    2.73                66
 12/18/2019   16:43:11   (  69.33, -72.43) 12/18/2019   16:44:21  (  69.23, -71.34)   44.10                70
 12/18/2019   17:33:43   ( -68.73,  95.73) 12/18/2019   17:33:58  ( -68.74,  95.66)    2.94                15
 12/18/2019   18:24:26   (  68.63, -96.84) 12/18/2019   18:23:24  (  68.62, -96.84)    1.10                62