# calendar day

> English word · Noun

## Definitions
1. A timespan of exactly 24 hours, measured from one midnight to the next.
2. A day having a conventional designation on a recognized calendar, such as a numerical identification within a named month.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/calendar-day