Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 6 10.  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   (  69.93, -34.38) 06/12/2020   14:09:58  (  69.83, -31.91)   95.42                66
 06/12/2020   14:59:15   ( -68.87, 134.46) 06/12/2020   14:59:43  ( -68.89, 134.48)    2.78                28
 06/12/2020   15:49:59   (  68.76, -58.08) 06/12/2020   15:49:11  (  68.73, -58.08)    3.06                48
 06/15/2020   07:15:38   ( -68.89,-109.66) 06/15/2020   07:16:11  ( -68.91,-109.62)    2.54                33
 06/15/2020   08:06:21   (  68.73,  57.86) 06/15/2020   08:05:39  (  68.74,  57.81)    2.28                42
 06/17/2020   23:32:02   ( -68.91,   6.22) 06/17/2020   23:32:40  ( -68.92,   6.27)    2.18                38
 06/18/2020   00:22:45   (  68.76, 173.74) 06/18/2020   00:22:08  (  68.75, 173.70)    1.97                37
 06/20/2020   15:48:26   ( -68.93, 122.10) 06/20/2020   15:49:09  ( -68.92, 122.16)    2.59                43
 06/20/2020   16:39:09   (  68.79, -70.39) 06/20/2020   16:38:36  (  68.80, -70.34)    2.55                33
 06/23/2020   08:04:49   ( -68.90,-121.95) 06/23/2020   08:05:38  ( -68.92,-121.96)    2.33                49
 06/23/2020   08:55:33   (  68.82,  45.48) 06/23/2020   08:55:05  (  68.80,  45.53)    2.96                28
 06/23/2020   09:45:58   ( -67.83,-145.92) 06/23/2020   09:44:50  ( -67.87,-147.96)   85.45                68