Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 8 12.  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,  87.18) 08/13/2020   06:08:07  (  69.18,  87.74)   24.61                71
 08/13/2020   06:57:32   ( -68.88,-104.95) 08/13/2020   06:57:40  ( -68.90,-104.99)    2.19                 8
 08/13/2020   07:48:16   (  68.80,  62.48) 08/13/2020   07:47:07  (  68.79,  62.53)    1.75                69
 08/15/2020   22:23:21   (  69.44,-157.13) 08/15/2020   22:24:32  (  69.33,-156.18)   39.05                71
 08/15/2020   23:13:55   ( -68.94,  10.89) 08/15/2020   23:14:07  ( -68.94,  10.95)    2.14                12
 08/16/2020   00:04:38   (  68.80, 178.40) 08/16/2020   00:03:35  (  68.78, 178.39)    2.12                63
 08/18/2020   14:39:48   (  69.65, -41.53) 08/18/2020   14:40:57  (  69.53, -40.03)   59.45                69
 08/18/2020   15:30:18   ( -68.94, 126.81) 08/18/2020   15:30:36  ( -68.92, 126.81)    1.76                18
 08/18/2020   16:21:01   (  68.80, -65.69) 08/18/2020   16:20:03  (  68.81, -65.69)    1.79                58
 08/21/2020   06:56:15   (  69.86,  74.07) 08/21/2020   06:57:22  (  69.73,  76.11)   79.99                67
 08/21/2020   07:46:41   ( -68.94,-117.28) 08/21/2020   07:47:04  ( -68.96,-117.27)    1.84                23
 08/21/2020   08:37:24   (  68.80,  50.22) 08/21/2020   08:36:32  (  68.79,  50.16)    2.65                52
 08/23/2020   23:12:41   (  70.02,-170.26) 08/23/2020   23:13:47  (  69.92,-167.74)   96.71                66
 08/24/2020   00:03:04   ( -68.94,  -1.37) 08/24/2020   00:03:33  ( -68.93,  -1.42)    2.46                29
 08/24/2020   00:53:47   (  68.80, 166.13) 08/24/2020   00:53:00  (  68.81, 166.08)    2.76                47