Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 8 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)
 08/13/2020   06:06:56   (  69.28,  87.19) 08/13/2020   06:08:07  (  69.18,  87.74)   24.37                71
 08/13/2020   06:57:32   ( -68.88,-104.94) 08/13/2020   06:57:40  ( -68.90,-104.98)    2.81                 8
 08/13/2020   07:48:16   (  68.79,  62.49) 08/13/2020   07:47:07  (  68.80,  62.53)    1.74                69
 08/15/2020   22:23:21   (  69.44,-157.13) 08/15/2020   22:24:32  (  69.33,-156.18)   39.03                71
 08/15/2020   23:13:55   ( -68.94,  10.90) 08/15/2020   23:14:07  ( -68.94,  10.95)    2.16                12
 08/16/2020   00:04:38   (  68.80, 178.40) 08/16/2020   00:03:35  (  68.78, 178.39)    2.05                63
 08/18/2020   14:39:48   (  69.65, -41.53) 08/18/2020   14:40:57  (  69.53, -40.04)   59.55                69
 08/18/2020   15:30:18   ( -68.94, 126.81) 08/18/2020   15:30:36  ( -68.92, 126.80)    2.10                18
 08/18/2020   16:21:01   (  68.80, -65.69) 08/18/2020   16:20:03  (  68.81, -65.69)    1.20                58
 08/21/2020   06:56:14   (  69.82,  74.14) 08/21/2020   06:57:22  (  69.72,  76.11)   76.26                68
 08/21/2020   07:46:41   ( -68.94,-117.29) 08/21/2020   07:47:04  ( -68.95,-117.28)    0.71                23
 08/21/2020   08:37:24   (  68.80,  50.22) 08/21/2020   08:36:32  (  68.78,  50.15)    3.56                52
 08/23/2020   23:12:41   (  70.03,-170.27) 08/23/2020   23:13:47  (  69.90,-167.75)   96.91                66
 08/24/2020   00:03:04   ( -68.95,  -1.38) 08/24/2020   00:03:32  ( -68.97,  -1.37)    2.52                28
 08/24/2020   00:53:46   (  68.81, 166.12) 08/24/2020   00:52:59  (  68.80, 166.06)    2.56                47