Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 6 12.  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)
 06/12/2020   14:08:52   (  69.96, -34.43) 06/12/2020   14:09:57  (  69.86, -31.87)   98.61                65
 06/12/2020   14:59:14   ( -68.85, 134.49) 06/12/2020   14:59:43  ( -68.86, 134.44)    2.40                29
 06/12/2020   15:49:58   (  68.73, -58.05) 06/12/2020   15:49:10  (  68.76, -58.04)    2.52                48
 06/15/2020   07:15:38   ( -68.87,-109.64) 06/15/2020   07:16:12  ( -68.88,-109.66)    0.96                34
 06/15/2020   08:06:22   (  68.77,  57.82) 06/15/2020   08:05:39  (  68.77,  57.85)    1.47                43
 06/17/2020   23:32:02   ( -68.90,   6.24) 06/17/2020   23:32:41  ( -68.89,   6.24)    1.04                39
 06/18/2020   00:22:45   (  68.75, 173.75) 06/18/2020   00:22:08  (  68.78, 173.74)    3.45                37
 06/20/2020   15:48:24   ( -68.88, 122.18) 06/20/2020   15:49:09  ( -68.90, 122.13)    3.22                45
 06/20/2020   16:39:08   (  68.79, -70.39) 06/20/2020   16:38:36  (  68.78, -70.37)    0.63                32
 06/23/2020   08:04:48   ( -68.91,-121.95) 06/23/2020   08:05:38  ( -68.91,-121.98)    1.24                50
 06/23/2020   08:55:31   (  68.77,  45.55) 06/23/2020   08:55:05  (  68.78,  45.51)    2.20                26
 06/23/2020   09:45:57   ( -67.84,-145.93) 06/23/2020   09:44:49  ( -67.91,-147.91)   83.57                68
 06/26/2020   00:21:12   ( -68.94,  -6.09) 06/26/2020   00:22:06  ( -68.96,  -6.03)    3.01                54
 06/26/2020   01:11:55   (  68.81, 161.40) 06/26/2020   01:11:34  (  68.78, 161.39)    3.24                21
 06/26/2020   02:02:24   ( -68.03, -30.26) 06/26/2020   02:01:15  ( -68.08, -31.84)   65.80                69