Editor's Note: The launch window for STS-134 is 10 minutes long, centered on the moment when Earth's rotation carries the pad into the plane of the space station's orbit. To optimize ascent performance, NASA targets the "in-plane" time.

All times are Eastern.

DATE.......WINDOW OPEN...IN PLANE......WINDOW CLOSE..DOCKING

05/16/11...08:55:42 AM...08:56:28 AM...09:01:28 AM...Flight Day 3


05/17/11...08:28:56 AM...08:33:56 AM...08:38:56 AM...FD 3

05/18/11...08:08:09 AM...08:08:12 AM...08:13:12 AM...FD 3
.......................................08:16:25 AM...FD 4

05/19/11...07:40:41 AM...07:45:41 AM...07:50:41 AM...FD 3

05/20/11...07:19:59 AM...07:19:59 AM...07:24:59 AM...FD 3*
.......................................07:28:12 AM...FD 4

05/21/11...06:52:27 AM...06:57:27 AM...07:02:27 AM...FD 3**

05/22/11...06:31:38 AM...06:31:45 AM...06:36:45 AM...FD 3
.......................................06:39:58 AM...FD 4

05/23/11...06:04:14 AM...06:09:14 AM...06:14:14 AM...FD 3

05/24/11...05:43:04 AM...05:43:32 AM...05:48:32 AM...FD 3
.......................................05:51:45 AM...FD 4

05/25/11...05:16:40 AM...05:21:40 AM...05:26:40 AM...FD 3

05/26/11...04:54:18 AM...04:55:19 AM...05:00:19 AM...FD 3
.......................................05:03:32 AM...FD 4

05/27/11...04:27:47 AM...04:32:47 AM...04:37:47 AM...FD 3

05/28/11...04:05:18 AM...04:07:05 AM...04:12:05 AM...FD 3
.......................................04:15:18 AM...FD 4

* May not be avaiilable because of Soyuz TMA-20 undocking
** Not available because of Soyuz TMA-20 undocking