Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 3 19.  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)
 03/21/2020   12:49:34   ( -68.85, 166.72) 03/21/2020   12:50:27  ( -68.87, 166.73)    2.84                53
 03/21/2020   13:40:17   (  68.73, -25.81) 03/21/2020   13:39:55  (  68.70, -25.84)    3.10                22
 03/21/2020   14:30:45   ( -67.88, 142.60) 03/21/2020   14:29:37  ( -67.93, 140.87)   72.88                68
 03/24/2020   05:05:58   ( -68.88, -77.42) 03/24/2020   05:06:54  ( -68.87, -77.39)    2.15                56
 03/24/2020   05:56:41   (  68.76,  90.05) 03/24/2020   05:56:21  (  68.75,  90.10)    2.81                20
 03/24/2020   06:47:11   ( -68.02,-101.67) 03/24/2020   06:46:01  ( -68.09,-103.06)   58.31                70
 03/26/2020   21:22:22   ( -68.86,  38.51) 03/26/2020   21:23:22  ( -68.86,  38.48)    1.25                60
 03/26/2020   22:13:05   (  68.75,-154.02) 03/26/2020   22:12:49  (  68.73,-154.03)    1.56                16
 03/26/2020   23:03:38   ( -68.16,  14.06) 03/26/2020   23:02:27  ( -68.19,  12.95)   45.91                71
 03/29/2020   13:38:47   ( -68.90, 154.36) 03/29/2020   13:39:49  ( -68.90, 154.42)    2.55                62
 03/29/2020   14:29:29   (  68.73, -38.10) 03/29/2020   14:29:17  (  68.71, -38.16)    3.14                12
 03/29/2020   15:20:04   ( -68.26, 129.84) 03/29/2020   15:18:53  ( -68.29, 128.95)   36.98                71
 04/01/2020   05:55:11   ( -68.89, -89.72) 04/01/2020   05:56:17  ( -68.88, -89.71)    1.04                66
 04/01/2020   06:45:54   (  68.77,  77.75) 04/01/2020   06:45:44  (  68.75,  77.77)    2.60                10
 04/01/2020   07:36:30   ( -68.35,-114.37) 04/01/2020   07:35:18  ( -68.44,-114.98)   26.93                72