Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 1 27.  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)
 01/29/2021   03:31:36   ( -70.05, -54.38) 01/29/2021   03:32:45  ( -69.93, -52.71)   65.21                69
 01/29/2021   04:22:08   (  69.29, 114.05) 01/29/2021   04:22:22  (  69.27, 114.05)    2.27                14
 01/29/2021   05:12:48   ( -69.15, -78.43) 01/29/2021   05:11:52  ( -69.16, -78.46)    1.38                56
 01/31/2021   19:48:01   ( -70.27,  61.21) 01/31/2021   19:49:08  ( -70.16,  63.51)   87.68                67
 01/31/2021   20:38:29   (  69.30,-130.05) 01/31/2021   20:38:49  (  69.29,-130.05)    1.98                20
 01/31/2021   21:29:09   ( -69.16,  37.48) 01/31/2021   21:28:19  ( -69.18,  37.45)    2.39                50
 02/03/2021   12:54:50   (  69.32, -14.14) 02/03/2021   12:55:16  (  69.30, -14.15)    2.54                26
 02/03/2021   13:45:30   ( -69.17, 153.39) 02/03/2021   13:44:46  ( -69.19, 153.35)    2.91                44
 02/06/2021   05:11:11   (  69.34, 101.76) 02/06/2021   05:11:42  (  69.36, 101.82)    3.08                31
 02/06/2021   06:01:51   ( -69.18, -90.70) 02/06/2021   06:01:13  ( -69.20, -90.76)    3.02                38
 02/08/2021   21:27:31   (  69.36,-142.34) 02/08/2021   21:28:08  (  69.36,-142.30)    1.38                37
 02/08/2021   22:18:12   ( -69.25,  25.14) 02/08/2021   22:17:38  ( -69.26,  25.20)    2.73                34