Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 5 4.  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)
 05/06/2020   02:19:05   (  68.88, 144.39) 05/06/2020   02:19:36  (  68.86, 144.45)    3.51                31
 05/06/2020   03:09:45   ( -68.73, -48.09) 05/06/2020   03:09:06  ( -68.75, -48.06)    2.14                39
 05/08/2020   18:35:29   (  68.89, -99.72) 05/08/2020   18:36:08  (  68.88, -99.66)    2.91                39
 05/08/2020   19:26:09   ( -68.74,  67.81) 05/08/2020   19:25:38  ( -68.77,  67.83)    2.98                31
 05/11/2020   10:51:51   (  68.85,  16.25) 05/11/2020   10:52:41  (  68.87,  16.19)    3.13                50
 05/11/2020   11:42:32   ( -68.75,-176.30) 05/11/2020   11:42:11  ( -68.77,-176.31)    1.49                21
 05/11/2020   12:33:00   (  67.77,  -7.73) 05/11/2020   12:31:53  (  67.82,  -9.80)   87.05                67
 05/14/2020   03:08:16   (  68.92, 132.06) 05/14/2020   03:09:16  (  68.90, 132.08)    2.03                60
 05/14/2020   03:58:57   ( -68.82, -60.48) 05/14/2020   03:58:46  ( -68.80, -60.41)    3.43                11
 05/14/2020   04:49:32   (  68.22, 107.62) 05/14/2020   04:48:21  (  68.25, 106.56)   44.06                71
 05/16/2020   19:24:41   (  68.99,-112.12) 05/16/2020   19:25:52  (  68.97,-111.99)    5.84                71
 05/16/2020   20:15:21   ( -68.83,  55.41) 05/16/2020   20:15:23  ( -68.81,  55.45)    2.57                 2
 05/16/2020   21:06:04   (  68.66,-137.05) 05/16/2020   21:04:51  (  68.65,-137.11)    2.51                73