Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 11 23.  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)
 11/25/2021   07:58:40   (  70.56,  60.22) 11/25/2021   07:59:38  (  70.57,  60.14)    3.30                58
 11/25/2021   08:49:23   ( -70.50,-132.38) 11/25/2021   08:49:07  ( -70.51,-132.32)    2.22                16
 11/25/2021   09:39:54   (  69.63,  36.27) 11/25/2021   09:38:47  (  69.69,  34.17)   81.50                67
 11/27/2021   23:25:52   ( -70.56,   8.43) 11/27/2021   23:26:38  ( -70.58,   8.39)    2.93                46
 11/28/2021   00:16:38   (  70.48, 175.86) 11/28/2021   00:16:05  (  70.48, 175.88)    1.03                33
 11/30/2021   14:53:09   (  70.59, -43.42) 11/30/2021   14:53:35  (  70.60, -43.34)    3.18                26
 11/30/2021   15:43:51   ( -70.47, 124.09) 11/30/2021   15:43:05  ( -70.48, 124.13)    2.29                46
 12/03/2021   05:29:49   (  71.15,  96.52) 12/03/2021   05:30:58  (  71.04,  97.94)   52.55                69
 12/03/2021   06:20:22   ( -70.56, -95.16) 12/03/2021   06:20:35  ( -70.55, -95.18)    1.35                13
 12/03/2021   07:11:07   (  70.44,  72.33) 12/03/2021   07:10:02  (  70.44,  72.30)    1.02                65
 12/05/2021   20:56:55   ( -70.64,  45.59) 12/05/2021   20:58:05  ( -70.66,  45.59)    2.05                70
 12/05/2021   21:47:40   (  70.53,-146.92) 12/05/2021   21:47:32  (  70.55,-146.93)    1.97                 8
 12/05/2021   22:38:18   ( -70.18,  20.94) 12/05/2021   22:37:06  ( -70.22,  20.22)   27.22                72