noun, noun or participle which takes 'suru'
leaving a building; exiting a facility
Used for leaving a library, museum, or similar public building. Often contrasted with 入館 (にゅうかん, entering).
See also: 入館 (にゅうかん)
図書館の退館時間は午後8時です。
The library's closing time is 8 p.m.
We keep records of entries and exits.