Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 12 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)
 01/01/2020   02:55:49   ( -68.81, -44.90) 01/01/2020   02:56:21  ( -68.82, -44.84)    2.32                32
 01/01/2020   03:46:33   (  68.69, 122.57) 01/01/2020   03:45:49  (  68.67, 122.61)    3.18                44
 01/03/2020   19:12:14   ( -68.80,  71.01) 01/03/2020   19:12:50  ( -68.81,  71.02)    0.58                36
 01/03/2020   20:02:58   (  68.68,-121.51) 01/03/2020   20:02:17  (  68.71,-121.46)    3.43                41
 01/06/2020   11:28:38   ( -68.79,-173.08) 01/06/2020   11:29:18  ( -68.79,-173.12)    1.66                40
 01/06/2020   12:19:22   (  68.67,  -5.60) 01/06/2020   12:18:45  (  68.69,  -5.60)    1.67                37
 01/09/2020   03:45:04   ( -68.84, -57.24) 01/09/2020   03:45:46  ( -68.83, -57.19)    2.15                42
 01/09/2020   04:35:47   (  68.66, 110.31) 01/09/2020   04:35:14  (  68.67, 110.25)    2.24                33
 01/11/2020   20:01:29   ( -68.83,  58.67) 01/11/2020   20:02:15  ( -68.81,  58.67)    2.34                46
 01/11/2020   20:52:13   (  68.71,-133.86) 01/11/2020   20:51:42  (  68.70,-133.83)    1.85                31