# Birthdate

Source: https://core.telegram.org/bots/api#birthdate

[Documentation index](../llms.txt)

Describes the birthdate of a user.

| Field | Type | Description |
| --- | --- | --- |
| day | Integer | Day of the user's birth; 1-31 |
| month | Integer | Month of the user's birth; 1-12 |
| year | Integer | *Optional*. Year of the user's birth |