Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 8 21.  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)
 08/22/2019   19:49:24   ( -68.84,  61.73) 08/22/2019   19:50:08  ( -68.85,  61.78)    2.77                44
 08/22/2019   20:40:08   (  68.72,-130.80) 08/22/2019   20:39:36  (  68.70,-130.77)    2.53                32
 08/22/2019   21:30:30   ( -67.59,  37.95) 08/22/2019   21:29:23  ( -67.63,  35.60)   99.60                67
 08/25/2019   12:05:49   ( -68.80, 177.66) 08/25/2019   12:06:36  ( -68.81, 177.60)    2.66                47
 08/25/2019   12:56:33   (  68.68, -14.87) 08/25/2019   12:56:03  (  68.70, -14.89)    2.34                30
 08/25/2019   13:46:56   ( -67.61, 153.81) 08/25/2019   13:45:49  ( -67.70, 151.55)   95.87                67
 08/28/2019   04:22:16   ( -68.82, -66.48) 08/28/2019   04:23:04  ( -68.81, -66.51)    1.86                48
 08/28/2019   05:13:00   (  68.70, 100.99) 08/28/2019   05:12:31  (  68.70, 101.00)    0.26                29
 08/28/2019   06:03:24   ( -67.69, -90.40) 08/28/2019   06:02:17  ( -67.70, -92.56)   91.48                67
 08/30/2019   20:38:43   ( -68.85,  49.38) 08/30/2019   20:39:31  ( -68.87,  49.43)    3.15                48
 08/30/2019   21:29:27   (  68.73,-143.15) 08/30/2019   21:28:59  (  68.70,-143.13)    3.26                28
 08/30/2019   22:19:51   ( -67.71,  25.46) 08/30/2019   22:18:44  ( -67.76,  23.38)   88.01                67
 09/02/2019   12:55:10   ( -68.87, 165.24) 09/02/2019   12:55:59  ( -68.86, 165.30)    3.02                49
 09/02/2019   13:45:53   (  68.70, -27.23) 09/02/2019   13:45:27  (  68.69, -27.26)    1.88                26
 09/02/2019   14:36:19   ( -67.79, 141.26) 09/02/2019   14:35:11  ( -67.80, 139.31)   81.67                68