| Monday through Friday: 6:45 am to 8:00 pm - The main door is unlocked at at 6:45 am.
- The laboratory is open from 7:00 am to 8:00 pm.
- All departments open at 8:00 am.
Saturday, Sunday, and holidays: 8:00 am to 5:00 pm - The laboratory is open on Saturday from 8:00 am to 5:00 pm, and on Sunday from 1:00 pm to 5:00 pm.
Holidays Dartmouth-Hitchcock Concord recognizes the following holidays. Hours will be limited on these days. Please call a department directly to verify availability. - New Year's Day
- Memorial Day
- Independence Day
- Labor Day
- Thanksgiving Day
- Christmas Day
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