Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 10 2.  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)
 10/03/2020   04:59:27   (  69.03, 104.54) 10/03/2020   05:00:09  (  69.01, 104.50)    2.98                42
 10/03/2020   05:50:08   ( -68.94, -88.01) 10/03/2020   05:49:38  ( -68.95, -87.94)    3.12                30
 10/05/2020   21:15:50   (  69.06,-139.59) 10/05/2020   21:16:37  (  69.06,-139.56)    1.28                47
 10/05/2020   22:06:31   ( -68.97,  27.87) 10/05/2020   22:06:07  ( -68.95,  27.94)    3.23                24
 10/05/2020   22:56:57   (  67.88,-163.40) 10/05/2020   22:55:50  (  67.95,-165.64)   93.76                67
 10/08/2020   13:32:12   (  69.05, -23.64) 10/08/2020   13:33:06  (  69.05, -23.69)    1.81                54
 10/08/2020   14:22:53   ( -68.94, 143.82) 10/08/2020   14:22:36  ( -68.95, 143.81)    0.47                17
 10/08/2020   15:13:23   (  68.08, -47.73) 10/08/2020   15:12:15  (  68.16, -49.50)   74.03                68
 10/11/2020   05:48:35   (  69.08,  92.22) 10/11/2020   05:49:34  (  69.10,  92.25)    1.59                59
 10/11/2020   06:39:15   ( -68.98,-100.31) 10/11/2020   06:39:03  ( -68.99,-100.25)    3.12                12
 10/11/2020   07:29:49   (  68.33,  67.86) 10/11/2020   07:28:39  (  68.37,  66.63)   50.73                70
 10/13/2020   22:04:56   (  69.07,-151.84) 10/13/2020   22:06:02  (  69.08,-151.89)    2.05                66
 10/13/2020   22:55:37   ( -68.96,  15.63) 10/13/2020   22:55:32  ( -68.98,  15.61)    2.82                 5
 10/13/2020   23:46:15   (  68.53,-176.49) 10/13/2020   23:45:04  (  68.58,-177.24)   31.00                71