Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 6 13.  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)
 06/15/2020   07:15:38   ( -68.89,-109.66) 06/15/2020   07:16:12  ( -68.87,-109.67)    2.81                34
 06/15/2020   08:06:21   (  68.73,  57.87) 06/15/2020   08:05:39  (  68.76,  57.84)    3.33                42
 06/17/2020   23:32:01   ( -68.87,   6.28) 06/17/2020   23:32:41  ( -68.89,   6.23)    2.81                40
 06/18/2020   00:22:45   (  68.77, 173.73) 06/18/2020   00:22:08  (  68.78, 173.74)    0.94                37
 06/20/2020   15:48:25   ( -68.90, 122.15) 06/20/2020   15:49:10  ( -68.91, 122.14)    0.74                45
 06/20/2020   16:39:09   (  68.81, -70.42) 06/20/2020   16:38:37  (  68.79, -70.36)    2.81                32
 06/23/2020   08:04:48   ( -68.94,-121.99) 06/23/2020   08:05:38  ( -68.93,-121.96)    1.70                50
 06/23/2020   08:55:31   (  68.80,  45.51) 06/23/2020   08:55:05  (  68.80,  45.53)    1.26                26
 06/23/2020   09:45:57   ( -67.86,-145.96) 06/23/2020   09:44:49  ( -67.93,-147.89)   81.21                68
 06/26/2020   00:21:11   ( -68.92,  -6.06) 06/26/2020   00:22:07  ( -68.94,  -6.06)    2.28                56
 06/26/2020   01:11:54   (  68.79, 161.44) 06/26/2020   01:11:34  (  68.82, 161.43)    3.43                20
 06/26/2020   02:02:24   ( -68.06, -30.30) 06/26/2020   02:01:15  ( -68.11, -31.80)   62.57                69