Golden Week: a legal calendar plus a wider travel period
For 2026, the Cabinet Office lists national holidays on April 29 and May 3-5, plus May 6 as a legal holiday under the substitute-holiday rule. JNTO describes late April to early May as one of Japan's busiest travel periods and advises early booking. Use those sources to trigger earlier verification; do not claim that every train, room or event will sell out.
Obon: a travel peak, not a nationwide national holiday
JNTO identifies mid-August Obon as a major domestic travel period. The Cabinet Office national-holiday table does not define an Obon block. Check the exact year's Mountain Day separately, then verify employer, operator, accommodation and event rules individually rather than assigning one universal Obon timetable.
New Year: one national holiday inside a broader operating period
New Year's Day is a national holiday. JNTO describes late December to early January as a busy travel period and notes that some businesses close for several days. Check every essential operator and venue directly; do not treat December 29-January 3 as a guaranteed closure or opening schedule.
September 2026: verify a real three-day legal holiday sequence
The Cabinet Office lists Respect for the Aged Day on September 21, a legal holiday on September 22 under the between-two-holidays rule, and the Autumnal Equinox on September 23. This is a confirmed calendar sequence, not a crowd forecast. Use it to recheck transport, accommodation and event commitments for those dates.
Tokyo Game Show 2026: the final public day is a national holiday
The organizer lists public days September 19-21 at Makuhari Messe, with September 21 identified as a public holiday and different closing hours on the final day. The event is in Chiba and requires its own ticket and access checks. Do not infer inventory, queue length or Tokyo-city transport conditions from the holiday alone.
KYOMAF 2026: event days immediately precede the holiday sequence
KYOMAF officially lists September 19-20 in Kyoto, followed by the national holiday sequence beginning September 21. A traveler combining the fair with another city should protect the intercity and accommodation plan, while keeping venue admission, program and transport rules tied to KYOMAF's current official pages.
Sapporo Autumn Fest 2026: a multi-week event still needs date-specific checks
The official site lists September 11-October 3 at Odori Park, so it spans the September holiday sequence. A long event period does not guarantee the same menu, stock, seating, weather operation or comfort each day. Use the official event and access pages for the chosen date and keep vendor-level details unconfirmed until published.