Holiday detail

Mountain Day

Mountain Day is an official holiday in Japan.

Quick facts

Date Tuesday, August 11, 2026
Type Regular holiday
Countdown 90 days away
Official

Long-weekend note

This holiday creates a 4-day weekend from August 8-11, 2026.

File leave on Mon, August 10, 2026 to make it a 4-day break.

See all long weekends

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