Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 1 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)
 01/23/2021   18:58:47   ( -69.61,  74.41) 01/23/2021   18:59:58  ( -69.53,  74.99)   24.29                71
 01/23/2021   19:49:27   (  69.27,-117.79) 01/23/2021   19:49:28  (  69.26,-117.72)    3.19                 1
 01/23/2021   20:40:07   ( -69.13,  49.73) 01/23/2021   20:38:58  ( -69.14,  49.77)    1.92                69
 01/26/2021   11:15:12   ( -69.83,-169.98) 01/26/2021   11:16:22  ( -69.73,-168.86)   44.63                70
 01/26/2021   12:05:47   (  69.23,  -1.80) 01/26/2021   12:05:56  (  69.23,  -1.87)    2.93                 9
 01/26/2021   12:56:28   ( -69.14, 165.65) 01/26/2021   12:55:26  ( -69.12, 165.62)    2.41                62
 01/29/2021   03:31:37   ( -70.05, -54.38) 01/29/2021   03:32:46  ( -69.92, -52.71)   65.23                69
 01/29/2021   04:22:08   (  69.24, 114.11) 01/29/2021   04:22:23  (  69.26, 114.04)    3.46                15
 01/29/2021   05:12:49   ( -69.15, -78.44) 01/29/2021   05:11:53  ( -69.15, -78.47)    1.20                56
 01/31/2021   19:48:01   ( -70.27,  61.20) 01/31/2021   19:49:08  ( -70.16,  63.51)   87.63                67
 01/31/2021   20:38:29   (  69.31,-130.05) 01/31/2021   20:38:49  (  69.28,-130.05)    3.22                20
 01/31/2021   21:29:09   ( -69.16,  37.48) 01/31/2021   21:28:19  ( -69.17,  37.44)    2.24                50
 02/03/2021   12:54:50   (  69.32, -14.14) 02/03/2021   12:55:16  (  69.29, -14.15)    3.07                26
 02/03/2021   13:45:30   ( -69.17, 153.39) 02/03/2021   13:44:46  ( -69.19, 153.35)    3.22                44