The Hiroshima Peace Memorial Park is opened 24 hours a day. The hours vary if you are visiting the Hiroshima Peace Memorial Museum and depend on the season.
From March to July they are opened from 8:30 am to 6:00 pm.
In August, they are opened from 8:30 am to 7:00 pm (Open until 8:00 pm on August 5 and 6).
From September to November, they are opened from 8:300 am to 6:00 pm.
From December to February, they are opened from 8:30 am to 5:00 pm.
Days Closed: December 30 and 31
*The last entry to the museum is 30 minutes before closing time.