Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 3 28.  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)
 03/29/2021   03:12:24   ( -69.78, -48.86) 03/29/2021   03:13:36  ( -69.70, -48.40)   19.59                72
 03/29/2021   04:03:03   (  69.45, 118.94) 03/29/2021   04:03:06  (  69.43, 118.88)    3.04                 3
 03/29/2021   04:53:45   ( -69.36, -73.61) 03/29/2021   04:52:35  ( -69.37, -73.57)    2.38                70
 03/31/2021   19:28:47   ( -69.99,  66.76) 03/31/2021   19:29:58  ( -69.90,  67.75)   39.20                71
 03/31/2021   20:19:22   (  69.45,-125.13) 03/31/2021   20:19:31  (  69.46,-125.20)    2.83                 9
 03/31/2021   21:10:04   ( -69.36,  42.32) 03/31/2021   21:09:01  ( -69.35,  42.28)    1.96                63
 04/03/2021   11:45:11   ( -70.20,-177.64) 04/03/2021   11:46:20  ( -70.14,-176.03)   61.12                69
 04/03/2021   12:35:43   (  69.51,  -9.28) 04/03/2021   12:35:57  (  69.48,  -9.29)    3.54                14
 04/03/2021   13:26:24   ( -69.36, 158.25) 04/03/2021   13:25:27  ( -69.37, 158.20)    2.48                57
 04/06/2021   04:01:36   ( -70.47, -62.13) 04/06/2021   04:02:43  ( -70.32, -59.88)   85.26                67
 04/06/2021   04:52:03   (  69.52, 106.64) 04/06/2021   04:52:23  (  69.49, 106.61)    2.98                20
 04/06/2021   05:42:45   ( -69.42, -85.90) 04/06/2021   05:41:53  ( -69.39, -85.90)    3.43                52
 04/08/2021   21:08:23   (  69.53,-137.44) 04/08/2021   21:08:48  (  69.56,-137.42)    3.42                25
 04/08/2021   21:59:05   ( -69.43,  30.03) 04/08/2021   21:58:19  ( -69.40,  30.00)    3.30                46