Only Offices and Banks Close! Hangeul Day 2026 Falls on a Friday—October’s Second Three-Day Weekend (Oct 9–11), and Gwanghwamun Becomes a Festival

October 9 is Hangeul Day—the holiday marking King Sejong’s promulgation of the Korean alphabet. In 2026 it lands on a Friday, making October 9–11 the month’s second three-day weekend.

Our October holidays guide covered the crowd waves. Today is the specific chapter: what actually happens in Seoul on Hangeul Day weekend, and what a traveler can do with it. Here’s the thing—this isn’t a shopping or homecoming holiday. It’s a holiday about culture, and the city’s face changes accordingly.

“So how do I use this weekend?” Events, crowds, and the traveler-only pleasures, in three parts. Let’s get into it.

1. Gwanghwamun Square Turns Festival! What Happens This Weekend

✔ The Sejong Center and the Hangeul Museum anchor it
Around Hangeul Day, Gwanghwamun Square and the King Sejong statue become a de facto cultural festival—calligraphy workshops, alphabet-themed exhibitions and performances, anchored by the Sejong Center and the National Hangeul Museum in Yongsan. The square peaks on the holiday itself.

The crowd profile matches the earlier long weekend: family waves toward palaces, Namsan and nearby foliage. Same counterplay—one headline sight at opening, distributed places after.

✔ Got this far? Then this is your next move. “Early October in Seoul: Aim for the Trough Weekdays of 6–8 October” is the step after.

2. Reading Station Names by Dinner? The Traveler-Only Pleasure—Learn the Alphabet in a Day

✔ Three picks
This weekend stacks ways to enjoy the alphabet itself. First, the National Hangeul Museum (Yongsan, free)—a rare museum devoted to a writing system, told through hands-on exhibits. Second, a calligraphy hour in Insadong—your own name written in hangeul is the holiday’s finest souvenir. Third, reading signs—hangeul is famously learnable in hours once the principle clicks, and merely sounding out subway station names raises your whole trip’s resolution.

3. Only Offices and Banks Close! The Practical Note on What Closes

✔ Commerce runs as normal
Unlike Chuseok, commerce runs as normal—only government offices and banks close; department stores, markets and restaurants stay open. The only cautions are long-weekend hotel rates and intercity congestion: book the Oct 8–10 nights early and push day trips past the weekend.

Mid-October also opens Seoul’s finest autumn stretch. Hangeul Day weekend runs a double bill—a cultural holiday at the doorway of peak autumn. An itinerary that lands on it has drawn a good card. Go celebrate an alphabet’s birthday at Gwanghwamun.

Frequently asked questions

What exactly does Hangeul Day celebrate?

King Sejong’s 1446 promulgation of the Korean alphabet. A national holiday for a writing system is nearly unique worldwide — a marker of how central the alphabet is to Korean identity.

Do shops close?

Barely. Outside government offices and banks, the city runs normally — no Chuseok-style closure wave.

Does the Hangeul Museum require booking?

The permanent exhibition is free and walk-in; some special exhibitions and workshops take reservations.

Best pick with children?

The museum’s hands-on floor — assembling letters like blocks needs no Korean at all.

Any foliage this weekend?

Central Seoul is only starting; the northern mountains like Seoraksan are entering peak. Chase color toward Gangwon, not the suburbs.

Read next — Two long weekends in early October · Free palace entry in hanbok