period of stay; authorized length of stay; duration of stay
Refers to the legally permitted period a foreign national may remain in a country, commonly used in immigration and visa contexts.
Please apply for renewal before your period of stay expires.
The authorized length of stay for this visa is 90 days.
extension of visa permit
Compound of 在留 (ざいりゅう, 'staying in a foreign country') and 期間 (きかん, 'period').