Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 1 28.  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   ( -70.04, -54.38) 01/29/2021   03:32:45  ( -69.93, -52.70)   65.00                69
 01/29/2021   04:22:08   (  69.28, 114.05) 01/29/2021   04:22:22  (  69.27, 114.05)    1.49                14
 01/29/2021   05:12:48   ( -69.15, -78.43) 01/29/2021   05:11:52  ( -69.16, -78.46)    1.81                56
 01/31/2021   19:48:01   ( -70.26,  61.21) 01/31/2021   19:49:08  ( -70.17,  63.52)   87.38                67
 01/31/2021   20:38:29   (  69.30,-130.04) 01/31/2021   20:38:49  (  69.29,-130.04)    1.09                20
 01/31/2021   21:29:09   ( -69.15,  37.49) 01/31/2021   21:28:19  ( -69.18,  37.45)    3.06                50
 02/03/2021   12:54:50   (  69.31, -14.13) 02/03/2021   12:55:16  (  69.30, -14.15)    1.60                26
 02/03/2021   13:45:31   ( -69.22, 153.33) 02/03/2021   13:44:46  ( -69.19, 153.35)    2.86                45
 02/06/2021   05:11:11   (  69.33, 101.78) 02/06/2021   05:11:43  (  69.30, 101.74)    2.94                32
 02/06/2021   06:01:52   ( -69.23, -90.76) 02/06/2021   06:01:13  ( -69.20, -90.76)    2.98                39
 02/08/2021   21:27:31   (  69.34,-142.32) 02/08/2021   21:28:08  (  69.36,-142.30)    1.74                37
 02/08/2021   22:18:12   ( -69.24,  25.15) 02/08/2021   22:17:38  ( -69.26,  25.20)    2.82                34