Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 8 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)
 08/07/2020   21:34:05   (  68.99,-144.24) 08/07/2020   21:35:13  (  69.00,-144.25)    0.57                68
 08/07/2020   22:24:46   ( -68.86,  23.26) 08/07/2020   22:24:43  ( -68.88,  23.23)    2.98                 3
 08/07/2020   23:15:26   (  68.56,-169.03) 08/07/2020   23:14:13  (  68.61,-169.46)   18.24                73
 08/10/2020   13:50:30   (  69.10, -28.47) 08/10/2020   13:51:41  (  69.05, -28.31)    8.61                71
 08/10/2020   14:41:09   ( -68.91, 139.11) 08/10/2020   14:41:11  ( -68.88, 139.11)    3.05                 2
 08/10/2020   15:31:51   (  68.72, -53.33) 08/10/2020   15:30:39  (  68.72, -53.45)    4.87                72
 08/13/2020   06:06:55   (  69.25,  87.22) 08/13/2020   06:08:07  (  69.15,  87.70)   22.44                72
 08/13/2020   06:57:32   ( -68.90,-104.98) 08/13/2020   06:57:39  ( -68.93,-104.95)    2.97                 7
 08/13/2020   07:48:15   (  68.77,  62.52) 08/13/2020   07:47:07  (  68.76,  62.49)    1.45                68
 08/15/2020   22:23:22   (  69.46,-157.17) 08/15/2020   22:24:32  (  69.35,-156.15)   41.78                70
 08/15/2020   23:13:55   ( -68.90,  10.94) 08/15/2020   23:14:08  ( -68.92,  10.92)    1.89                13
 08/16/2020   00:04:39   (  68.82, 178.36) 08/16/2020   00:03:35  (  68.80, 178.42)    3.17                64
 08/18/2020   14:39:48   (  69.62, -41.48) 08/18/2020   14:40:57  (  69.56, -39.99)   58.20                69
 08/18/2020   15:30:19   ( -68.95, 126.78) 08/18/2020   15:30:36  ( -68.96, 126.85)    2.88                17
 08/18/2020   16:21:01   (  68.76, -65.65) 08/18/2020   16:20:04  (  68.78, -65.72)    3.54                57