365

Numeral

 * 1) Three hundred and sixty-five in Arabic numerals.

Etymology
Shortened from "three hundred and sixty-five days a year".

Adverb

 * 1) Every day of the year. Typically describes a business or service open or available every day, including holidays, such as a gas station, convenience store, ATM, hotline, or concierge service.
 * They're open three sixty-five; they never close.