Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 4 23.  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)
 04/24/2019   06:38:34   (  68.85,  79.59) 04/24/2019   06:39:27  (  68.86,  79.53)    2.55                53
 04/24/2019   07:29:15   ( -68.75,-112.95) 04/24/2019   07:28:57  ( -68.74,-112.99)    1.66                18
 04/24/2019   08:19:45   (  67.88,  55.48) 04/24/2019   08:18:37  (  67.92,  53.67)   76.08                68
 04/26/2019   22:55:02   (  68.87,-164.55) 04/26/2019   22:55:56  (  68.88,-164.57)    1.24                54
 04/26/2019   23:45:43   ( -68.77,   2.90) 04/26/2019   23:45:26  ( -68.76,   2.92)    0.73                17
 04/27/2019   00:36:14   (  67.95, 171.27) 04/27/2019   00:35:05  (  67.99, 169.63)   68.71                69
 04/29/2019   15:11:29   (  68.89, -48.70) 04/29/2019   15:12:24  (  68.89, -48.68)    0.88                55
 04/29/2019   16:02:10   ( -68.79, 118.76) 04/29/2019   16:01:54  ( -68.78, 118.81)    2.29                16
 04/29/2019   16:52:41   (  67.97, -72.87) 04/29/2019   16:51:32  (  68.06, -74.41)   65.09                69
 05/02/2019   07:27:57   (  68.91,  67.15) 05/02/2019   07:28:53  (  68.89,  67.20)    2.73                56
 05/02/2019   08:18:37   ( -68.75,-125.31) 05/02/2019   08:18:23  ( -68.78,-125.30)    3.48                14
 05/02/2019   09:09:10   (  68.04,  42.92) 05/02/2019   09:08:00  (  68.12,  41.53)   58.04                70
 05/04/2019   23:44:24   (  68.88,-176.92) 05/04/2019   23:45:22  (  68.89,-176.92)    1.24                58
 05/05/2019   00:35:05   ( -68.77,  -9.46) 05/05/2019   00:34:52  ( -68.78,  -9.43)    1.73                13
 05/05/2019   01:25:38   (  68.06, 158.77) 05/05/2019   01:24:29  (  68.11, 157.41)   56.76                69