Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 12 11.  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)
 12/13/2019   08:10:17   (  69.14,  56.05) 12/13/2019   08:11:28  (  69.02,  56.62)   26.14                71
 12/13/2019   09:00:53   ( -68.75,-136.09) 12/13/2019   09:01:01  ( -68.74,-136.10)    0.78                 8
 12/13/2019   09:51:37   (  68.65,  31.35) 12/13/2019   09:50:28  (  68.64,  31.41)    3.34                69
 12/16/2019   00:26:44   (  69.23, 171.82) 12/16/2019   00:27:55  (  69.11, 172.62)   34.23                71
 12/16/2019   01:17:18   ( -68.73, -20.18) 12/16/2019   01:17:30  ( -68.72, -20.24)    2.80                12
 12/16/2019   02:08:02   (  68.64, 147.26) 12/16/2019   02:06:57  (  68.62, 147.27)    2.46                65
 12/18/2019   16:43:10   (  69.33, -72.41) 12/18/2019   16:44:20  (  69.25, -71.31)   43.95                70
 12/18/2019   17:33:43   ( -68.78,  95.67) 12/18/2019   17:33:57  ( -68.76,  95.68)    2.37                14
 12/18/2019   18:24:26   (  68.62, -96.82) 12/18/2019   18:23:24  (  68.64, -96.81)    2.32                62
 12/21/2019   08:59:38   (  69.47,  43.27) 12/21/2019   09:00:47  (  69.33,  44.67)   57.09                69
 12/21/2019   09:50:08   ( -68.77,-148.43) 12/21/2019   09:50:25  ( -68.78,-148.40)    1.83                17
 12/21/2019   10:40:51   (  68.61,  19.09) 12/21/2019   10:39:53  (  68.61,  19.03)    2.27                58
 12/24/2019   01:16:05   (  69.57, 159.03) 12/24/2019   01:17:13  (  69.46, 160.73)   67.37                68
 12/24/2019   02:06:33   ( -68.76, -32.52) 12/24/2019   02:06:54  ( -68.75, -32.56)    2.49                21
 12/24/2019   02:57:17   (  68.66, 134.93) 12/24/2019   02:56:21  (  68.63, 134.94)    3.33                56