Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 1 1.  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)
 01/02/2021   07:57:31   (  70.27,  58.67) 01/02/2021   07:58:37  (  70.17,  61.21)   96.39                66
 01/02/2021   08:47:54   ( -69.21,-132.43) 01/02/2021   08:48:22  ( -69.22,-132.44)    1.20                28
 01/02/2021   09:38:38   (  69.10,  35.03) 01/02/2021   09:37:49  (  69.12,  35.07)    2.47                49
 01/05/2021   01:04:16   ( -69.26, -16.58) 01/05/2021   01:04:50  ( -69.24, -16.54)    2.85                34
 01/05/2021   01:54:59   (  69.10, 150.96) 01/05/2021   01:54:17  (  69.13, 150.96)    3.65                42
 01/07/2021   17:20:37   ( -69.26,  99.36) 01/07/2021   17:21:18  ( -69.25,  99.35)    1.26                41
 01/07/2021   18:11:21   (  69.15, -93.18) 01/07/2021   18:10:45  (  69.13, -93.15)    1.65                36
 01/10/2021   09:36:58   ( -69.25,-144.71) 01/10/2021   09:37:46  ( -69.25,-144.77)    2.46                48
 01/10/2021   10:27:42   (  69.14,  22.75) 01/10/2021   10:27:13  (  69.13,  22.73)    1.56                29
 01/10/2021   11:18:05   ( -68.08,-168.51) 01/10/2021   11:16:59  ( -68.14,-170.87)   98.11                66
 01/13/2021   01:53:19   ( -69.30, -28.86) 01/13/2021   01:54:12  ( -69.30, -28.83)    1.47                53
 01/13/2021   02:44:03   (  69.19, 138.61) 01/13/2021   02:43:39  (  69.18, 138.67)    2.86                24
 01/13/2021   03:34:30   ( -68.35, -52.92) 01/13/2021   03:33:21  ( -68.41, -54.66)   71.64                69