Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 9 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)
 09/25/2020   03:19:55   ( -70.10, -52.07) 09/25/2020   03:21:01  ( -69.96, -49.51)   98.62                66
 09/25/2020   04:10:20   (  68.97, 116.88) 09/25/2020   04:10:44  (  68.97, 116.81)    2.55                24
 09/25/2020   05:01:01   ( -68.88, -75.68) 09/25/2020   05:00:14  ( -68.86, -75.70)    2.49                47
 09/27/2020   20:26:42   (  68.99,-127.24) 09/27/2020   20:27:12  (  68.98,-127.30)    3.11                30
 09/27/2020   21:17:23   ( -68.90,  40.21) 09/27/2020   21:16:42  ( -68.87,  40.20)    3.16                41
 09/30/2020   12:43:05   (  69.01, -11.35) 09/30/2020   12:43:40  (  69.03, -11.35)    2.41                35
 09/30/2020   13:33:46   ( -68.91, 156.11) 09/30/2020   13:33:10  ( -68.93, 156.15)    2.56                36
 10/03/2020   04:59:28   (  69.03, 104.54) 10/03/2020   05:00:09  (  69.03, 104.52)    0.56                41
 10/03/2020   05:50:09   ( -68.93, -88.00) 10/03/2020   05:49:39  ( -68.93, -87.97)    1.19                30
 10/05/2020   21:15:51   (  69.06,-139.58) 10/05/2020   21:16:37  (  69.08,-139.53)    3.21                46
 10/05/2020   22:06:32   ( -68.95,  27.89) 10/05/2020   22:06:08  ( -68.93,  27.90)    2.23                24
 10/05/2020   22:56:58   (  67.87,-163.39) 10/05/2020   22:55:51  (  67.91,-165.68)   95.90                67