The Implementation Regulation for Leave of Prisoners Article 8

Prisoners’ leave hours per day shall be from 6:00 a.m. to 9:00 p.m. on the same day in principle, subjected to decisions by Prisons based on the actual needs in accordance with the leave application conditions of the prisoners.If a prisoner on leave needs to stay overnight outside Prison, the Prison may designate the location of the overnight stay and make a filing with the supervisory authority for approval.The overnight stay location under the preceding paragraph has to be a Prison.
中文原文 受刑人外出實施辦法第8條
受刑人每日外出時間,自當日上午六時至下午九時之間為原則,由監獄依受刑人申請外出條件,斟酌實際需要決定之。
外出受刑人有於監外留宿必要者,監獄得指定其留宿處所,並報監督機關核准。
前項留宿處所以監獄為限。

English translation for reference only; the Chinese text prevails. Not legal advice.