Library of Congress Opening Days and Hours

We are not going to print the Library’s opening hours here, and that is a deliberate choice rather than an oversight.

Federal building hours change — for holidays, for events, for closures — and a travel page carrying a stale time is worse than a page carrying none, because it sends someone to a locked door with confidence. The Library publishes its current hours on its own site, and that is where to check them on the day you book.

What we can give you is the part that actually decides whether you get in, and which is documented and stable.

Yes, it is open to the public

That is the underlying question behind most “hours” searches, and the answer is straightforward: the Library of Congress is open to the public and free to enter. It is not restricted to researchers or pass-holders in any exclusive sense.

Every visitor does need a free timed-entry pass for the Thomas Jefferson Building — see tickets and passes — but that is a capacity measure, not a barrier.

The schedule that matters more than the hours

Because entry is capped, the pass release schedule constrains your visit more than the opening hours do:

• Passes are released up to 30 days ahead, on a rolling basis.
• Same-day passes are released online at 9:00 a.m. Eastern, on each day the Library is open to the public.
• A limited number are available per day.
• Passes are valid only for the issued date and time.

In practice: if you know your date, book at 30 days. If you are deciding that morning, check at 9 a.m. Eastern. Those two facts will do more for your visit than knowing the closing time.

The one set of hours we will state

The Supreme Court, two minutes’ walk away, publishes a simple and stable window on its own site: open to the public Monday to Friday, 9 a.m. to 3 p.m., closed at weekends and on all federal holidays, admission free, no ticket.

We state that one because it is narrow, because it is published plainly by the Court, and because it is the constraint most likely to break a Capitol Hill plan — a weekend visit cannot include the Supreme Court at all. See the Supreme Court guide.

Planning around federal closures

All three Capitol Hill buildings are federal, which means:

Federal holidays close or curtail them. If your dates fall on one, check each building separately — they do not behave identically.

Weekends differ per building. The Supreme Court is weekday-only. The Library and the Capitol have their own patterns, published on their own sites.

Events and official business can close spaces at short notice, particularly at the Capitol and the Supreme Court, which are working institutions rather than museums.

This is the real argument for checking on the day rather than trusting any secondary source, this one included.

If you are taking a guided tour

The operator schedules around all of it, which is a quiet part of what you are paying for. The featured tour runs its own published departure times and includes the Library reservation, so the pass release schedule stops being your problem.

That does not exempt you from the weekday rule at the Supreme Court, which no operator can override.

Supreme Court hours checked September 2026 on supremecourt.gov. Library hours deliberately not reproduced — check loc.gov.

See guided Capitol Hill tours