saang1 jat6 jat6 kei4生日日期

Jyutpingsaang1 jat6 jat6 kei4
Yalesāang yaht yaht kèih

Definition

Date of birth.

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How it's used

While this term is understood in speech, it is primarily a formal or administrative expression used for official documents and registration forms. In casual conversation, people almost always prefer asking for their birthday using the simpler phrase 生日.

Examples

You need to fill in your date of birth on the form.

Common mistake

Learners often use this term in social settings where it sounds overly bureaucratic or stiff. If you are just asking a friend when they were born, stick to asking for their 生日 instead.

Grammar color guide

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