Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 1 9.  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)
 01/09/2020   04:35:48   (  68.70, 110.26) 01/09/2020   04:35:14  (  68.68, 110.26)    2.21                34
 01/11/2020   20:01:28   ( -68.82,  58.68) 01/11/2020   20:02:14  ( -68.80,  58.66)    2.49                46
 01/11/2020   20:52:12   (  68.69,-133.84) 01/11/2020   20:51:41  (  68.70,-133.82)    1.09                31
 01/11/2020   21:42:34   ( -67.58,  34.90) 01/11/2020   21:41:28  ( -67.64,  32.55)   99.73                66
 01/14/2020   12:17:53   ( -68.82, 174.59) 01/14/2020   12:18:42  ( -68.83, 174.57)    1.23                49
 01/14/2020   13:08:37   (  68.69, -17.93) 01/14/2020   13:08:10  (  68.67, -17.99)    3.45                27
 01/14/2020   13:59:02   ( -67.74, 150.61) 01/14/2020   13:57:54  ( -67.77, 148.58)   85.21                68
 01/17/2020   04:34:19   ( -68.87, -69.58) 01/17/2020   04:35:10  ( -68.85, -69.52)    3.19                51
 01/17/2020   05:25:02   (  68.69,  97.97) 01/17/2020   05:24:38  (  68.68,  97.92)    2.31                24
 01/17/2020   06:15:29   ( -67.84, -93.62) 01/17/2020   06:14:20  ( -67.90, -95.38)   74.08                69
 01/19/2020   20:50:44   ( -68.86,  46.33) 01/19/2020   20:51:38  ( -68.86,  46.38)    2.07                54
 01/19/2020   21:41:26   (  68.69,-146.13) 01/19/2020   21:41:05  (  68.69,-146.19)    2.40                21
 01/19/2020   22:31:55   ( -67.95,  22.15) 01/19/2020   22:30:46  ( -67.98,  20.58)   65.45                69
 01/22/2020   13:07:08   ( -68.86, 162.23) 01/22/2020   13:08:05  ( -68.87, 162.27)    2.15                57
 01/22/2020   13:57:51   (  68.69, -30.23) 01/22/2020   13:57:33  (  68.70, -30.30)    2.93                18
 01/22/2020   14:48:22   ( -68.05, 137.92) 01/22/2020   14:47:12  ( -68.10, 136.61)   54.61                70