> For the complete documentation index, see [llms.txt](https://200ok.gitbook.io/200ok-documents/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://200ok.gitbook.io/200ok-documents/user-manual/built-in-functions/date-and-time/day.md).
# day
day() function is the Standard function available in 200OK.
**Description** : The day function returns the day of the month based on the date passed.
**Syntax** : fx\_day(date)
**Example** : fx\_day(2023-03-25) returns 25 as the response, indicating that it's the 25th day of the month.
Here we go with simple scenario using the above function.
**Scenario** : In a payroll management system, administrators need to track employee attendance and calculate wages based on the number of days worked. They utilize a function to extract the day of the month from the attendance records. For example, using the function with the date '2023-03-25' returns '25', indicating that the employee worked on the 25th day of the month.
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**Request Side** :
**Response Side** :
