Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 12 4.  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)
 12/05/2019   07:20:56   (  68.85,  68.77) 12/05/2019   07:22:05  (  68.87,  68.77)    1.99                69
 12/05/2019   08:11:38   ( -68.77,-123.81) 12/05/2019   08:11:35  ( -68.75,-123.74)    3.50                 3
 12/05/2019   09:02:17   (  68.41,  43.97) 12/05/2019   09:01:05  (  68.48,  43.57)   17.95                72
 12/07/2019   23:37:22   (  68.88,-175.38) 12/07/2019   23:38:34  (  68.86,-175.35)    2.37                72
 12/08/2019   00:28:03   ( -68.75,  -7.88) 12/08/2019   00:28:04  ( -68.75,  -7.86)    0.86                 1
 12/08/2019   01:18:45   (  68.55, 159.69) 12/08/2019   01:17:32  (  68.58, 159.58)    5.75                73
 12/10/2019   15:53:50   (  69.02, -59.67) 12/10/2019   15:55:01  (  68.96, -59.35)   14.55                71
 12/10/2019   16:44:28   ( -68.73, 108.04) 12/10/2019   16:44:33  ( -68.74, 108.01)    1.82                 5
 12/10/2019   17:35:11   (  68.64, -84.53) 12/10/2019   17:33:59  (  68.63, -84.48)    2.07                72
 12/13/2019   08:10:16   (  69.10,  56.10) 12/13/2019   08:11:28  (  68.99,  56.58)   22.57                72
 12/13/2019   09:00:53   ( -68.76,-136.11) 12/13/2019   09:01:00  ( -68.78,-136.06)    2.57                 7
 12/13/2019   09:51:36   (  68.62,  31.40) 12/13/2019   09:50:28  (  68.61,  31.38)    1.06                68
 12/16/2019   00:26:44   (  69.25, 171.80) 12/16/2019   00:27:54  (  69.14, 172.65)   35.57                70
 12/16/2019   01:17:18   ( -68.74, -20.19) 12/16/2019   01:17:29  ( -68.75, -20.21)    1.29                11
 12/16/2019   02:08:02   (  68.65, 147.24) 12/16/2019   02:06:56  (  68.64, 147.30)    2.50                66
 12/18/2019   16:43:11   (  69.34, -72.43) 12/18/2019   16:44:21  (  69.22, -71.36)   43.98                70
 12/18/2019   17:33:44   ( -68.78,  95.65) 12/18/2019   17:33:57  ( -68.78,  95.71)    2.31                13
 12/18/2019   18:24:27   (  68.63, -96.84) 12/18/2019   18:23:25  (  68.61, -96.85)    2.73                62