Home Global Holiday Calendar Global Holiday Calendar Japan Japan: Mountain Day Japan: Mountain Day View all events Download Add to Calendar Export to other calendar/iCal When: August 8, 2021 all-day 2021-08-08T00:00:00+00:00 2021-08-09T00:00:00+00:00 Where: Mountain Day APJ Japan Mountain Day Note : These holidays are subject to change as per local regulations of the respective country. Print