Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 1 20.  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)
 01/22/2020   13:07:12   ( -69.07, 161.95) 01/22/2020   13:08:24  ( -69.01, 162.35)   17.45                72
 01/22/2020   13:57:52   (  68.73, -30.28) 01/22/2020   13:57:54  (  68.74, -30.34)    2.86                 2
 01/22/2020   14:48:33   ( -68.64, 137.16) 01/22/2020   14:47:24  ( -68.63, 137.15)    0.83                69
 01/25/2020   05:23:41   ( -69.33, -82.53) 01/25/2020   05:24:52  ( -69.24, -81.49)   42.16                71
 01/25/2020   06:14:17   (  68.79,  85.54) 01/25/2020   06:14:25  (  68.80,  85.59)    2.75                 8
 01/25/2020   07:04:57   ( -68.64,-106.94) 01/25/2020   07:03:56  ( -68.64,-106.98)    1.45                61
 01/27/2020   21:40:12   ( -69.65,  32.91) 01/27/2020   21:41:20  ( -69.52,  34.75)   72.71                68
 01/27/2020   22:30:42   (  68.79,-158.57) 01/27/2020   22:30:58  (  68.81,-158.54)    1.95                16
 01/27/2020   23:21:22   ( -68.64,   8.96) 01/27/2020   23:20:29  ( -68.65,   8.90)    2.66                53
 01/30/2020   13:56:42   ( -69.92, 148.42) 01/30/2020   13:57:48  ( -69.81, 151.00)   99.64                66
 01/30/2020   14:47:07   (  68.80, -42.68) 01/30/2020   14:47:31  (  68.81, -42.67)    1.33                24
 01/30/2020   15:37:48   ( -68.69, 124.78) 01/30/2020   15:37:01  ( -68.71, 124.84)    3.02                47
 02/02/2020   07:03:32   (  68.81,  73.21) 02/02/2020   07:04:04  (  68.82,  73.20)    1.01                32
 02/02/2020   07:54:13   ( -68.70,-119.32) 02/02/2020   07:53:34  ( -68.72,-119.29)    3.05                39