Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 8 3.  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)
 08/04/2021   20:29:16   (  70.02,-127.53) 08/04/2021   20:29:45  (  70.04,-127.52)    1.99                29
 08/04/2021   21:19:58   ( -69.93,  39.93) 08/04/2021   21:19:15  ( -69.92,  39.95)    1.23                43
 08/07/2021   12:45:35   (  70.05, -11.64) 08/07/2021   12:46:11  (  70.06, -11.60)    1.71                36
 08/07/2021   13:36:17   ( -69.96, 155.82) 08/07/2021   13:35:41  ( -69.95, 155.87)    2.27                36
 08/10/2021   05:01:54   (  70.09, 104.24) 08/10/2021   05:02:37  (  70.08, 104.30)    2.54                43
 08/10/2021   05:52:35   ( -69.94, -88.21) 08/10/2021   05:52:07  ( -69.97, -88.22)    3.39                28
 08/12/2021   21:18:12   (  70.08,-139.79) 08/12/2021   21:19:03  (  70.10,-139.79)    2.22                51
 08/12/2021   22:08:54   ( -69.98,  27.68) 08/12/2021   22:08:33  ( -69.99,  27.69)    1.34                21
 08/12/2021   22:59:21   (  69.02,-163.61) 08/12/2021   22:58:14  (  69.10,-165.86)   89.70                67
 08/15/2021   13:34:30   (  70.12, -23.91) 08/15/2021   13:35:28  (  70.11, -23.90)    1.16                58
 08/15/2021   14:25:12   ( -70.02, 143.56) 08/15/2021   14:24:58  ( -70.00, 143.59)    1.95                14
 08/15/2021   15:15:44   (  69.33, -48.10) 08/15/2021   15:14:35  (  69.33, -49.68)   61.77                69