Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 9 15.  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)
 09/17/2020   02:30:34   ( -69.39, -38.76) 09/17/2020   02:31:46  ( -69.28, -38.06)   30.15                72
 09/17/2020   03:21:12   (  68.95, 129.16) 09/17/2020   03:21:17  (  68.96, 129.16)    0.75                 5
 09/17/2020   04:11:53   ( -68.86, -63.39) 09/17/2020   04:10:47  ( -68.84, -63.35)    2.32                66
 09/19/2020   18:47:01   ( -69.62,  76.82) 09/19/2020   18:48:11  ( -69.48,  78.08)   51.65                70
 09/19/2020   19:37:35   (  68.97,-114.95) 09/19/2020   19:37:45  (  68.98,-114.92)    1.60                10
 09/19/2020   20:28:15   ( -68.82,  52.57) 09/19/2020   20:27:16  ( -68.82,  52.50)    2.88                59
 09/22/2020   11:03:26   ( -69.80,-167.53) 09/22/2020   11:04:34  ( -69.72,-165.71)   70.81                68
 09/22/2020   11:53:57   (  68.99,   0.93) 09/22/2020   11:54:12  (  69.00,   0.98)    2.23                15
 09/22/2020   12:44:37   ( -68.84, 168.46) 09/22/2020   12:43:43  ( -68.84, 168.41)    1.78                54
 09/25/2020   03:19:52   ( -69.98, -51.89) 09/25/2020   03:20:59  ( -69.90, -49.57)   88.88                67
 09/25/2020   04:10:19   (  68.97, 116.88) 09/25/2020   04:10:41  (  68.96, 116.81)    2.88                22
 09/25/2020   05:01:00   ( -68.87, -75.66) 09/25/2020   05:00:11  ( -68.86, -75.68)    1.18                49
 09/27/2020   20:26:42   (  69.00,-127.24) 09/27/2020   20:27:09  (  68.97,-127.29)    3.42                27
 09/27/2020   21:17:23   ( -68.89,  40.22) 09/27/2020   21:16:39  ( -68.87,  40.22)    2.13                44