Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 3 16.  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)
 03/16/2020   05:07:28   (  68.72, 102.39) 03/16/2020   05:06:59  (  68.70, 102.39)    2.43                29
 03/16/2020   05:57:52   ( -67.67, -88.94) 03/16/2020   05:56:45  ( -67.71, -91.17)   94.11                67
 03/18/2020   20:33:10   ( -68.88,  50.77) 03/18/2020   20:33:59  ( -68.87,  50.84)    2.94                49
 03/18/2020   21:23:52   (  68.70,-141.68) 03/18/2020   21:23:27  (  68.70,-141.73)    2.16                25
 03/18/2020   22:14:19   ( -67.80,  26.79) 03/18/2020   22:13:11  ( -67.82,  24.85)   81.75                68
 03/21/2020   12:49:34   ( -68.86, 166.71) 03/21/2020   12:50:27  ( -68.87, 166.73)    1.60                53
 03/21/2020   13:40:17   (  68.74, -25.82) 03/21/2020   13:39:54  (  68.75, -25.78)    1.92                23
 03/21/2020   14:30:45   ( -67.89, 142.59) 03/21/2020   14:29:36  ( -67.98, 140.93)   70.43                69
 03/24/2020   05:05:58   ( -68.84, -77.36) 03/24/2020   05:06:55  ( -68.86, -77.40)    3.21                57
 03/24/2020   05:56:41   (  68.72,  90.11) 03/24/2020   05:56:22  (  68.74,  90.09)    2.10                19
 03/24/2020   06:47:12   ( -68.03,-101.68) 03/24/2020   06:46:02  ( -68.09,-103.06)   57.93                70
 03/26/2020   21:22:22   ( -68.87,  38.49) 03/26/2020   21:23:22  ( -68.85,  38.48)    2.24                60
 03/26/2020   22:13:05   (  68.76,-154.04) 03/26/2020   22:12:49  (  68.72,-154.04)    3.58                16
 03/26/2020   23:03:37   ( -68.12,  14.11) 03/26/2020   23:02:27  ( -68.19,  12.94)   49.09                70
 03/29/2020   13:38:47   ( -68.91, 154.35) 03/29/2020   13:39:49  ( -68.89, 154.42)    3.18                62
 03/29/2020   14:29:29   (  68.74, -38.11) 03/29/2020   14:29:16  (  68.76, -38.10)    2.51                13
 03/29/2020   15:20:04   ( -68.26, 129.83) 03/29/2020   15:18:52  ( -68.34, 129.01)   34.90                72