Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 3 22.  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)
 03/24/2020   05:05:58   ( -68.86, -77.40) 03/24/2020   05:06:54  ( -68.89, -77.36)    3.24                56
 03/24/2020   05:56:41   (  68.74,  90.08) 03/24/2020   05:56:22  (  68.72,  90.07)    2.49                19
 03/24/2020   06:47:11   ( -68.00,-101.64) 03/24/2020   06:46:02  ( -68.06,-103.09)   60.66                69
 03/26/2020   21:22:23   ( -68.90,  38.46) 03/26/2020   21:23:22  ( -68.88,  38.52)    3.20                59
 03/26/2020   22:13:05   (  68.73,-154.00) 03/26/2020   22:12:50  (  68.71,-154.06)    3.16                15
 03/26/2020   23:03:38   ( -68.15,  14.08) 03/26/2020   23:02:27  ( -68.22,  12.98)   46.02                71
 03/29/2020   13:38:46   ( -68.89, 154.38) 03/29/2020   13:39:49  ( -68.87, 154.39)    1.56                63
 03/29/2020   14:29:29   (  68.77, -38.14) 03/29/2020   14:29:16  (  68.75, -38.11)    2.13                13
 03/29/2020   15:20:04   ( -68.29, 129.80) 03/29/2020   15:18:52  ( -68.32, 128.99)   33.28                72
 04/01/2020   05:55:10   ( -68.87, -89.70) 04/01/2020   05:56:17  ( -68.86, -89.74)    2.22                67
 04/01/2020   06:45:53   (  68.75,  77.78) 04/01/2020   06:45:44  (  68.73,  77.75)    2.41                 9
 04/01/2020   07:36:30   ( -68.39,-114.42) 04/01/2020   07:35:18  ( -68.42,-115.00)   24.11                72
 04/03/2020   22:11:35   ( -68.91,  26.15) 04/03/2020   22:12:44  ( -68.90,  26.20)    2.72                69
 04/03/2020   23:02:17   (  68.74,-166.30) 04/03/2020   23:02:11  (  68.77,-166.31)    3.17                 6
 04/03/2020   23:52:56   ( -68.48,   1.36) 04/03/2020   23:51:44  ( -68.51,   1.00)   14.99                72