Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 7 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)
 07/12/2020   01:59:40   ( -69.50, -31.41) 07/12/2020   02:00:50  ( -69.41, -30.16)   49.89                70
 07/12/2020   02:50:13   (  68.85, 136.83) 07/12/2020   02:50:25  (  68.86, 136.77)    2.60                12
 07/12/2020   03:40:55   ( -68.76, -55.73) 07/12/2020   03:39:55  ( -68.75, -55.73)    0.75                60
 07/14/2020   18:16:08   ( -69.75,  84.14) 07/14/2020   18:17:16  ( -69.68,  86.08)   75.17                68
 07/14/2020   19:06:37   (  68.89,-107.32) 07/14/2020   19:06:55  (  68.91,-107.29)    2.25                18
 07/14/2020   19:57:18   ( -68.74,  60.20) 07/14/2020   19:56:26  ( -68.75,  60.14)    2.50                52
 07/17/2020   11:23:00   (  68.88,   8.61) 07/17/2020   11:23:27  (  68.90,   8.56)    2.98                27
 07/17/2020   12:13:42   ( -68.78, 176.06) 07/17/2020   12:12:57  ( -68.80, 176.07)    2.07                45
 07/20/2020   03:39:24   (  68.92, 124.47) 07/20/2020   03:39:59  (  68.94, 124.48)    2.49                35
 07/20/2020   04:30:06   ( -68.82, -68.08) 07/20/2020   04:29:30  ( -68.79, -68.07)    3.18                36
 07/22/2020   19:55:46   (  68.91,-119.60) 07/22/2020   19:56:32  (  68.92,-119.67)    3.48                46
 07/22/2020   20:46:28   ( -68.80,  47.85) 07/22/2020   20:46:02  ( -68.83,  47.84)    3.37                26