Japan's Year, Month by Month: Holidays, Closures, What's Expected

Japan Life, Labeled · No. 05 — Japan's Year, Month by Month: Holidays, Closures, What's Expected

You planned around the weekends, but the office was closed for a holiday you had never heard of — and the train was fully booked for a custom that is not a holiday at all.

This guide lays out Japan's full year in one place: the official holiday list, the three closure seasons, and the customs layer — each labeled as law, custom, or local practice.

What's inside

• The 3 rules that create days off, including substitute holidays and citizens' holidays
• All 18 days off in 2026, month by month — 16 national holidays plus 2 rule-made days
• The published 2027 holiday list (17 dates)
• The three closure seasons — New Year, Golden Week, Obon — and what actually closes in each
• Why the fiscal and school year start on April 1, and what that changes
• 6 seasonal customs, from New Year cards to year-end gifts and parties
• 5 rules of thumb for bookings and deadlines

Format

PDF, 9 pages. Last checked: November 2026.

Who this is for

You are planning travel, business schedules, deliveries, or a move — or you live in Japan and keep being caught out by closures.

Not for: anyone who needs one specific company's or university's calendar; those vary and outrank any general guide.

What this guide does not cover

Individual company and university calendars; religious observance in detail; regional festivals beyond the nationally disruptive ones.

How the labels work

Claims are labeled Known (checked against official sources), My read (the author's interpretation), or Don't know (it varies — the guide says how to check).

By One View From Japan — a Japanese data professional based in Japan. Japan from the inside, with the guesses labeled.

Drafted with AI assistance; every claim and figure reviewed by the author.

Questions: riku-muse@muse.ai

FAQ

Q: Is Obon a national holiday?

A: No. Obon is custom only — many companies close around August 13–16, but no law sets it. The guide keeps law and custom separate throughout.

Q: Can I rely on the 2027 dates?

A: They are the Cabinet Office's published list. One check remains: equinox dates are confirmed each February, so re-check if a plan depends on one.