Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 10 10.  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)
 10/11/2020   05:48:35   (  69.11,  92.18) 10/11/2020   05:49:33  (  69.10,  92.25)    2.70                58
 10/11/2020   06:39:15   ( -68.96,-100.28) 10/11/2020   06:39:04  ( -68.94,-100.33)    2.57                11
 10/11/2020   07:29:49   (  68.30,  67.90) 10/11/2020   07:28:39  (  68.38,  66.63)   52.74                70
 10/13/2020   22:04:57   (  69.09,-151.87) 10/13/2020   22:06:02  (  69.08,-151.90)    1.25                65
 10/13/2020   22:55:38   ( -68.98,  15.60) 10/13/2020   22:55:32  ( -68.98,  15.61)    0.45                 6
 10/13/2020   23:46:16   (  68.56,-176.51) 10/13/2020   23:45:04  (  68.59,-177.24)   29.77                72
 10/16/2020   14:21:20   (  69.13, -36.01) 10/16/2020   14:22:30  (  69.12, -35.97)    1.87                70
 10/16/2020   15:12:01   ( -69.01, 131.47) 10/16/2020   15:12:00  ( -69.02, 131.53)    2.46                 1
 10/16/2020   16:02:42   (  68.75, -60.86) 10/16/2020   16:01:29  (  68.79, -61.11)   10.83                73
 10/19/2020   06:37:44   (  69.27,  79.71) 10/19/2020   06:38:56  (  69.21,  80.02)   14.62                72
 10/19/2020   07:28:22   ( -68.99,-112.58) 10/19/2020   07:28:28  ( -69.00,-112.61)    1.46                 6
 10/19/2020   08:19:06   (  68.90,  54.86) 10/19/2020   08:17:55  (  68.88,  54.88)    2.70                71
 10/21/2020   22:54:10   (  69.47,-164.66) 10/21/2020   22:55:21  (  69.40,-163.84)   33.04                71
 10/21/2020   23:44:45   ( -69.03,   3.29) 10/21/2020   23:44:56  ( -69.03,   3.30)    0.63                11
 10/22/2020   00:35:28   (  68.89, 170.79) 10/22/2020   00:34:23  (  68.90, 170.79)    2.00                65