The next countdown milestones are as follows:
- Resume countdown at T-11 hours (12:06 a.m.)
- Activate the orbiter's fuel cells (1:16 a.m.)
- Clear the blast danger area of all non-essential personnel
- Switch Atlantis' purge air to gaseous nitrogen (1:51 a.m.)
- Enter planned 2-hour built-in hold at the T-6 hour mark (5:06 a.m.)
T - 6:00 and holding (scheduled)