Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 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)
 11/30/2021   14:53:00   (  70.59, -43.38) 11/30/2021   14:53:35  (  70.60, -43.34)    1.57                35
 11/30/2021   15:43:42   ( -70.48, 124.11) 11/30/2021   15:43:05  ( -70.47, 124.11)    1.18                37
 12/03/2021   06:20:08   ( -70.59, -95.15) 12/03/2021   06:20:34  ( -70.59, -95.12)    1.00                26
 12/03/2021   07:10:53   (  70.47,  72.35) 12/03/2021   07:10:01  (  70.49,  72.37)    2.19                52
 12/05/2021   20:56:46   ( -71.27,  44.62) 12/05/2021   20:57:55  ( -71.18,  46.39)   64.22                69
 12/05/2021   21:47:20   (  70.58,-146.92) 12/05/2021   21:47:31  (  70.59,-146.87)    2.02                11
 12/05/2021   22:38:02   ( -70.46,  20.59) 12/05/2021   22:37:01  ( -70.47,  20.59)    1.40                61
 12/08/2021   12:23:49   (  70.81,  -6.37) 12/08/2021   12:25:00  (  70.74,  -6.04)   14.25                71
 12/08/2021   13:14:29   ( -70.57, 161.33) 12/08/2021   13:14:31  ( -70.57, 161.34)    0.47                 2
 12/08/2021   14:05:12   (  70.36, -31.03) 12/08/2021   14:03:59  (  70.41, -31.25)    9.99                73
 12/11/2021   03:50:56   ( -70.68, -57.94) 12/11/2021   03:52:01  ( -70.66, -57.92)    2.38                65
 12/11/2021   04:41:40   (  70.53, 109.61) 12/11/2021   04:41:28  (  70.55, 109.56)    2.69                12
 12/11/2021   05:32:15   ( -70.03, -82.28) 12/11/2021   05:31:04  ( -70.11, -83.44)   44.91                71
 12/13/2021   19:18:07   (  70.66,-109.68) 12/13/2021   19:18:58  (  70.63,-109.71)    2.83                51
 12/13/2021   20:08:50   ( -70.56,  57.79) 12/13/2021   20:08:27  ( -70.58,  57.84)    2.81                23