Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 2 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)
 02/24/2021   23:05:37   (  69.58,-167.07) 02/24/2021   23:06:48  (  69.51,-166.83)   11.78                71
 02/24/2021   23:56:16   ( -69.36,   0.57) 02/24/2021   23:56:19  ( -69.35,   0.58)    1.35                 3
 02/25/2021   00:46:59   (  69.21, 168.09) 02/25/2021   00:45:46  (  69.24, 168.09)    3.66                73
 02/27/2021   15:22:02   (  69.82, -51.50) 02/27/2021   15:23:12  (  69.72, -50.67)   33.97                70
 02/27/2021   16:12:37   ( -69.38, 116.46) 02/27/2021   16:12:46  ( -69.39, 116.52)    2.13                 9
 02/27/2021   17:03:20   (  69.24, -76.02) 02/27/2021   17:02:14  (  69.22, -76.06)    2.45                66
 03/02/2021   07:38:25   (  70.02,  64.13) 03/02/2021   07:39:35  (  69.92,  65.48)   52.45                70
 03/02/2021   08:28:56   ( -69.36,-127.57) 03/02/2021   08:29:13  ( -69.37,-127.63)    2.53                17
 03/02/2021   09:19:40   (  69.28,  39.86) 03/02/2021   09:18:40  (  69.25,  39.86)    2.41                60
 03/04/2021   23:54:50   (  70.27, 179.68) 03/04/2021   23:55:58  (  70.16,-178.29)   77.14                68
 03/05/2021   00:45:17   ( -69.39, -11.69) 03/05/2021   00:45:40  ( -69.40, -11.71)    1.42                23
 03/05/2021   01:36:00   (  69.26, 155.81) 03/05/2021   01:35:07  (  69.28, 155.78)    2.65                53
 03/07/2021   17:01:38   ( -69.42, 104.20) 03/07/2021   17:02:07  ( -69.42, 104.20)    0.05                29
 03/07/2021   17:52:21   (  69.30, -88.31) 03/07/2021   17:51:34  (  69.30, -88.31)    0.36                47