Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 8 1.  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)
 08/02/2020   13:01:19   (  69.00, -16.08) 08/02/2020   13:02:15  (  68.99, -16.02)    2.93                56
 08/02/2020   13:52:00   ( -68.86, 151.43) 08/02/2020   13:51:45  ( -68.88, 151.47)    2.64                15
 08/02/2020   14:42:32   (  68.14, -40.31) 08/02/2020   14:41:22  (  68.22, -41.70)   57.73                70
 08/05/2020   05:17:42   (  69.00,  99.83) 08/05/2020   05:18:44  (  69.00,  99.87)    1.53                62
 08/05/2020   06:08:23   ( -68.86, -92.66) 08/05/2020   06:08:15  ( -68.83, -92.70)    3.43                 8
 08/05/2020   06:58:59   (  68.35,  75.33) 08/05/2020   06:57:48  (  68.39,  74.39)   38.48                71
 08/07/2020   21:34:05   (  69.00,-144.25) 08/07/2020   21:35:13  (  69.00,-144.24)    0.70                68
 08/07/2020   22:24:47   ( -68.91,  23.19) 08/07/2020   22:24:43  ( -68.90,  23.25)    3.02                 4
 08/07/2020   23:15:26   (  68.57,-169.04) 08/07/2020   23:14:13  (  68.62,-169.45)   17.61                73
 08/10/2020   13:50:30   (  69.10, -28.48) 08/10/2020   13:51:41  (  69.06, -28.29)    8.99                71
 08/10/2020   14:41:10   ( -68.91, 139.10) 08/10/2020   14:41:12  ( -68.90, 139.14)    1.65                 2
 08/10/2020   15:31:52   (  68.73, -53.34) 08/10/2020   15:30:40  (  68.73, -53.43)    3.67                72
 08/13/2020   06:06:56   (  69.31,  87.13) 08/13/2020   06:08:06  (  69.23,  87.81)   28.34                70
 08/13/2020   06:57:32   ( -68.91,-104.98) 08/13/2020   06:57:40  ( -68.91,-104.97)    0.39                 8
 08/13/2020   07:48:15   (  68.78,  62.50) 08/13/2020   07:47:07  (  68.79,  62.52)    1.39                68