Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 9 20.  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)
 09/22/2020   11:03:28   ( -69.86,-167.62) 09/22/2020   11:04:36  ( -69.78,-165.64)   76.71                68
 09/22/2020   11:53:58   (  69.00,   0.93) 09/22/2020   11:54:15  (  69.01,   0.99)    3.02                17
 09/22/2020   12:44:38   ( -68.85, 168.45) 09/22/2020   12:43:46  ( -68.85, 168.41)    1.53                52
 09/25/2020   04:10:20   (  69.02, 116.81) 09/25/2020   04:10:45  (  69.00, 116.84)    2.94                25
 09/25/2020   05:01:00   ( -68.87, -75.66) 09/25/2020   05:00:15  ( -68.89, -75.66)    1.99                45
 09/27/2020   20:26:42   (  68.99,-127.24) 09/27/2020   20:27:16  (  69.02,-127.26)    3.12                34
 09/27/2020   21:17:23   ( -68.89,  40.22) 09/27/2020   21:16:46  ( -68.92,  40.24)    2.75                37
 09/30/2020   12:43:05   (  69.02, -11.36) 09/30/2020   12:43:48  (  69.03, -11.39)    1.36                43
 09/30/2020   13:33:46   ( -68.92, 156.10) 09/30/2020   13:33:18  ( -68.93, 156.12)    1.65                28
 10/03/2020   04:59:28   (  69.05, 104.52) 10/03/2020   05:00:20  (  69.08, 104.54)    3.20                52
 10/03/2020   05:50:09   ( -68.94, -88.02) 10/03/2020   05:49:51  ( -68.93, -88.02)    1.61                18
 10/03/2020   06:40:38   (  68.08,  80.43) 10/03/2020   06:39:30  (  68.09,  78.60)   75.99                68