Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 5 14.  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)
 05/14/2020   03:08:15   (  68.87, 132.13) 05/14/2020   03:09:00  (  68.90, 132.15)    3.24                45
 05/14/2020   03:58:56   ( -68.78, -60.43) 05/14/2020   03:58:30  ( -68.78, -60.36)    2.71                26
 05/16/2020   19:24:39   (  68.88,-111.98) 05/16/2020   19:25:29  (  68.89,-111.98)    0.78                50
 05/16/2020   20:15:20   ( -68.79,  55.47) 05/16/2020   20:14:59  ( -68.78,  55.51)    2.29                21
 05/16/2020   21:05:48   (  67.80,-135.95) 05/16/2020   21:04:41  (  67.83,-137.98)   85.20                67
 05/19/2020   11:41:03   (  68.90,   3.91) 05/19/2020   11:41:58  (  68.87,   3.88)    2.62                55
 05/19/2020   12:31:43   ( -68.75, 171.43) 05/19/2020   12:31:28  ( -68.77, 171.38)    3.02                15
 05/19/2020   13:22:15   (  67.98, -20.26) 05/19/2020   13:21:06  (  68.04, -21.85)   66.67                69
 05/22/2020   03:57:26   (  68.91, 119.80) 05/22/2020   03:58:25  (  68.91, 119.81)    0.47                59
 05/22/2020   04:48:07   ( -68.81, -72.75) 05/22/2020   04:47:55  ( -68.81, -72.69)    2.53                12
 05/22/2020   05:38:41   (  68.15,  95.42) 05/22/2020   05:37:31  (  68.19,  94.20)   50.66                70
 05/24/2020   20:13:50   (  68.93,-124.31) 05/24/2020   20:14:53  (  68.94,-124.27)    2.13                63
 05/24/2020   21:04:30   ( -68.77,  43.22) 05/24/2020   21:04:24  ( -68.78,  43.17)    2.38                 6
 05/24/2020   21:55:08   (  68.33,-148.89) 05/24/2020   21:53:56  (  68.38,-149.68)   32.69                72
 05/27/2020   12:30:14   (  68.94,  -8.43) 05/27/2020   12:31:21  (  68.96,  -8.36)    3.35                67
 05/27/2020   13:20:54   ( -68.78, 159.11) 05/27/2020   13:20:52  ( -68.81, 159.08)    2.82                 2
 05/27/2020   14:11:34   (  68.46, -33.15) 05/27/2020   14:10:22  (  68.52, -33.63)   20.92                72