Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 6 16.  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)
 06/17/2020   23:32:02   ( -68.90,   6.24) 06/17/2020   23:32:41  ( -68.89,   6.24)    1.13                39
 06/18/2020   00:22:46   (  68.80, 173.69) 06/18/2020   00:22:08  (  68.79, 173.75)    3.07                38
 06/20/2020   15:48:24   ( -68.88, 122.18) 06/20/2020   15:49:09  ( -68.90, 122.14)    3.31                45
 06/20/2020   16:39:08   (  68.78, -70.38) 06/20/2020   16:38:36  (  68.79, -70.36)    1.34                32
 06/23/2020   08:04:48   ( -68.91,-121.95) 06/23/2020   08:05:38  ( -68.91,-121.98)    1.10                50
 06/23/2020   08:55:32   (  68.82,  45.48) 06/23/2020   08:55:05  (  68.79,  45.52)    3.24                27
 06/23/2020   09:45:57   ( -67.83,-145.92) 06/23/2020   09:44:49  ( -67.91,-147.91)   83.54                68
 06/26/2020   00:21:12   ( -68.94,  -6.08) 06/26/2020   00:22:07  ( -68.91,  -6.10)    3.38                55
 06/26/2020   01:11:55   (  68.80, 161.42) 06/26/2020   01:11:34  (  68.79, 161.40)    1.69                21
 06/26/2020   02:02:24   ( -68.03, -30.25) 06/26/2020   02:01:15  ( -68.08, -31.83)   65.85                69
 06/28/2020   16:37:36   ( -68.97, 109.79) 06/28/2020   16:38:35  ( -68.96, 109.85)    2.83                59
 06/28/2020   17:28:19   (  68.84, -82.72) 06/28/2020   17:28:02  (  68.83, -82.66)    2.61                17
 06/28/2020   18:18:51   ( -68.22,  85.41) 06/28/2020   18:17:40  ( -68.30,  84.31)   46.26                71