Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 1 7.  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   03:45:03   ( -68.82, -57.21) 01/09/2020   03:45:45  ( -68.85, -57.17)    3.23                42
 01/09/2020   04:35:47   (  68.69, 110.27) 01/09/2020   04:35:13  (  68.69, 110.28)    0.49                34
 01/11/2020   20:01:28   ( -68.82,  58.69) 01/11/2020   20:02:14  ( -68.82,  58.68)    0.40                46
 01/11/2020   20:52:12   (  68.69,-133.83) 01/11/2020   20:51:41  (  68.72,-133.81)    3.07                31
 01/11/2020   21:42:35   ( -67.64,  34.84) 01/11/2020   21:41:28  ( -67.66,  32.57)   96.05                67
 01/14/2020   12:17:53   ( -68.82, 174.59) 01/14/2020   12:18:42  ( -68.85, 174.59)    3.18                49
 01/14/2020   13:08:37   (  68.70, -17.94) 01/14/2020   13:08:10  (  68.69, -17.96)    1.47                27
 01/14/2020   13:59:02   ( -67.74, 150.60) 01/14/2020   13:57:54  ( -67.80, 148.61)   84.23                68
 01/17/2020   04:34:18   ( -68.82, -69.52) 01/17/2020   04:35:11  ( -68.82, -69.56)    1.95                53
 01/17/2020   05:25:02   (  68.70,  97.96) 01/17/2020   05:24:38  (  68.71,  97.94)    0.90                24
 01/17/2020   06:15:29   ( -67.85, -93.63) 01/17/2020   06:14:20  ( -67.93, -95.36)   72.62                69
 01/19/2020   20:50:42   ( -68.83,  46.38) 01/19/2020   20:51:38  ( -68.84,  46.34)    1.74                56
 01/19/2020   21:41:26   (  68.71,-146.15) 01/19/2020   21:41:05  (  68.72,-146.15)    1.81                21
 01/19/2020   22:31:55   ( -67.97,  22.13) 01/19/2020   22:30:46  ( -68.01,  20.62)   63.19                69