Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 1 24.  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)
 01/26/2021   11:15:12   ( -69.82,-169.97) 01/26/2021   11:16:22  ( -69.74,-168.85)   44.44                70
 01/26/2021   12:05:47   (  69.22,  -1.79) 01/26/2021   12:05:56  (  69.24,  -1.86)    3.47                 9
 01/26/2021   12:56:28   ( -69.14, 165.65) 01/26/2021   12:55:26  ( -69.13, 165.63)    1.17                62
 01/29/2021   03:31:37   ( -70.05, -54.38) 01/29/2021   03:32:46  ( -69.93, -52.70)   65.30                69
 01/29/2021   04:22:08   (  69.29, 114.04) 01/29/2021   04:22:22  (  69.27, 114.05)    2.72                14
 01/29/2021   05:12:48   ( -69.15, -78.43) 01/29/2021   05:11:52  ( -69.16, -78.46)    1.53                56
 01/31/2021   19:48:01   ( -70.27,  61.20) 01/31/2021   19:49:08  ( -70.17,  63.52)   88.01                67
 01/31/2021   20:38:29   (  69.31,-130.05) 01/31/2021   20:38:49  (  69.29,-130.04)    2.43                20
 01/31/2021   21:29:09   ( -69.16,  37.48) 01/31/2021   21:28:19  ( -69.18,  37.45)    2.52                50
 02/03/2021   12:54:50   (  69.33, -14.15) 02/03/2021   12:55:16  (  69.30, -14.14)    2.89                26
 02/03/2021   13:45:30   ( -69.18, 153.39) 02/03/2021   13:44:46  ( -69.20, 153.36)    2.90                44
 02/06/2021   05:11:10   (  69.30, 101.82) 02/06/2021   05:11:43  (  69.31, 101.75)    3.28                33
 02/06/2021   06:01:51   ( -69.19, -90.71) 02/06/2021   06:01:13  ( -69.21, -90.74)    2.64                38