Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 1 11.  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)
 01/11/2020   20:01:28   ( -68.82,  58.68) 01/11/2020   20:02:14  ( -68.82,  58.68)    0.71                46
 01/11/2020   20:52:12   (  68.69,-133.83) 01/11/2020   20:51:42  (  68.67,-133.87)    3.27                30
 01/11/2020   21:42:34   ( -67.58,  34.90) 01/11/2020   21:41:28  ( -67.65,  32.56)   99.14                66
 01/14/2020   12:17:53   ( -68.82, 174.59) 01/14/2020   12:18:43  ( -68.81, 174.55)    2.04                50
 01/14/2020   13:08:37   (  68.69, -17.93) 01/14/2020   13:08:10  (  68.71, -17.94)    1.91                27
 01/14/2020   13:59:02   ( -67.74, 150.60) 01/14/2020   13:57:54  ( -67.81, 148.63)   83.49                68
 01/17/2020   04:34:18   ( -68.82, -69.51) 01/17/2020   04:35:12  ( -68.81, -69.58)    2.80                54
 01/17/2020   05:25:02   (  68.69,  97.96) 01/17/2020   05:24:39  (  68.70,  97.94)    1.53                23
 01/17/2020   06:15:30   ( -67.90, -93.70) 01/17/2020   06:14:21  ( -67.92, -95.37)   69.86                69
 01/19/2020   20:50:43   ( -68.87,  46.31) 01/19/2020   20:51:39  ( -68.87,  46.38)    2.76                56
 01/19/2020   21:41:26   (  68.70,-146.14) 01/19/2020   21:41:07  (  68.70,-146.18)    1.82                19
 01/19/2020   22:31:56   ( -68.01,  22.07) 01/19/2020   22:30:46  ( -68.10,  20.72)   56.98                70
 01/22/2020   13:07:08   ( -68.88, 162.21) 01/22/2020   13:08:08  ( -68.88, 162.28)    2.74                60
 01/22/2020   13:57:51   (  68.70, -30.25) 01/22/2020   13:57:36  (  68.71, -30.29)    2.04                15
 01/22/2020   14:48:24   ( -68.18, 137.76) 01/22/2020   14:47:13  ( -68.22, 136.74)   42.39                71