# Julian calendar

> English word · Proper noun

## Definitions
1. The calendar which was used in the western world before the present-day Gregorian calendar. The Julian calendar differed in having all multiple-of-4 years as leap years.

## Etymology
Named after Julius Caesar who introduced the calendar in 46 BCE.

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