Translation guide
An event where a school, business, or organization opens its doors to the public for visits and information.
An event where prospective students and parents can visit a school or university to learn about it.
An event where a company or organization invites the public to visit its facilities.
A direct loanword from English, commonly used for corporate or institutional open days.
The most common term for a university or college open day in Japan. Often abbreviated as OC.
I plan to go to the University of Tokyo's open day next month.
Literally 'school information session'. Used for open days at schools, especially private ones, where there is a formal presentation.
You need to reserve a spot for this school's open day.
Used for open days at elementary, junior high, or high schools, often involving class observations.
We observed classes during the open day.
There is a company open day next week.
Means 'open to the public'. Used for facilities or events that are normally closed, like factories or research institutes.
I attended the research institute's open day.