Originally Posted by Q Shoe Guy

Yes, **Haneda Airport (HND) in Tokyo is a **24-hour airport.
However, while the airport itself operates around the clock, certain **facilities and services** have limited hours.

- **International Terminal (Terminal 3):** Open 24/7, with flights departing and arriving at all hours.
- **Domestic Terminals (1 & 2):** These are mostly closed overnight, with limited operations for late-night and early-morning flights.
- **Transportation:**
- **Trains:** Stop running late at night (usually around midnight).
- **Buses & Taxis:** Available 24/7.
- **Lounges & Shops:** Most close late at night, but some convenience stores and restaurants stay open.
- **Sleeping in the Airport:** Allowed, especially in Terminal 3, which has designated rest areas.