Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 7 30.  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)
 07/30/2020   20:44:55   (  68.95,-131.92) 07/30/2020   20:45:47  (  68.94,-131.97)    2.05                52
 07/30/2020   21:35:36   ( -68.81,  35.59) 07/30/2020   21:35:17  ( -68.83,  35.52)    3.59                19
 07/30/2020   22:26:05   (  67.92,-155.95) 07/30/2020   22:24:57  (  68.00,-157.84)   79.26                68
 08/02/2020   13:01:19   (  69.00, -16.08) 08/02/2020   13:02:15  (  69.00, -16.01)    2.82                56
 08/02/2020   13:52:00   ( -68.86, 151.43) 08/02/2020   13:51:46  ( -68.84, 151.41)    2.42                14
 08/02/2020   14:42:32   (  68.14, -40.31) 08/02/2020   14:41:23  (  68.17, -41.76)   59.95                69
 08/05/2020   05:17:42   (  69.00,  99.83) 08/05/2020   05:18:44  (  69.01,  99.88)    1.86                62
 08/05/2020   06:08:23   ( -68.86, -92.65) 08/05/2020   06:08:15  ( -68.84, -92.70)    2.32                 8
 08/05/2020   06:58:59   (  68.35,  75.33) 08/05/2020   06:57:48  (  68.40,  74.40)   38.34                71
 08/07/2020   21:34:05   (  69.00,-144.26) 08/07/2020   21:35:13  (  69.01,-144.24)    0.80                68
 08/07/2020   22:24:46   ( -68.86,  23.25) 08/07/2020   22:24:44  ( -68.85,  23.19)    3.00                 2
 08/07/2020   23:15:26   (  68.57,-169.05) 08/07/2020   23:14:13  (  68.62,-169.45)   17.16                73
 08/10/2020   13:50:29   (  69.12, -28.50) 08/10/2020   13:51:40  (  69.06, -28.29)   10.27                71
 08/10/2020   14:41:09   ( -68.92, 139.09) 08/10/2020   14:41:11  ( -68.91, 139.14)    2.69                 2
 08/10/2020   15:31:51   (  68.74, -53.36) 08/10/2020   15:30:39  (  68.73, -53.43)    3.09                72