Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 9 18.  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)
 09/19/2020   18:47:01   ( -69.62,  76.83) 09/19/2020   18:48:11  ( -69.49,  78.10)   51.44                70
 09/19/2020   19:37:35   (  68.96,-114.94) 09/19/2020   19:37:46  (  68.94,-114.97)    2.17                11
 09/19/2020   20:28:15   ( -68.82,  52.58) 09/19/2020   20:27:16  ( -68.84,  52.53)    3.04                59
 09/22/2020   11:03:27   ( -69.84,-167.60) 09/22/2020   11:04:35  ( -69.71,-165.73)   73.42                68
 09/22/2020   11:53:57   (  68.98,   0.95) 09/22/2020   11:54:13  (  68.99,   0.97)    1.23                16
 09/22/2020   12:44:38   ( -68.89, 168.40) 09/22/2020   12:43:43  ( -68.88, 168.47)    2.67                55
 09/25/2020   03:19:53   ( -70.02, -51.95) 09/25/2020   03:21:00  ( -69.93, -49.55)   91.97                67
 09/25/2020   04:10:20   (  69.00, 116.84) 09/25/2020   04:10:42  (  68.98, 116.84)    1.86                22
 09/25/2020   05:01:01   ( -68.90, -75.71) 09/25/2020   05:00:12  ( -68.88, -75.66)    3.15                49
 09/27/2020   20:26:43   (  69.02,-127.28) 09/27/2020   20:27:10  (  69.04,-127.21)    3.18                27
 09/27/2020   21:17:23   ( -68.87,  40.25) 09/27/2020   21:16:41  ( -68.89,  40.23)    2.23                42
 09/30/2020   12:43:06   (  69.04, -11.39) 09/30/2020   12:43:39  (  69.04, -11.33)    2.59                33
 09/30/2020   13:33:46   ( -68.89, 156.14) 09/30/2020   13:33:10  ( -68.89, 156.11)    1.40                36