Overview
2025 (MMXXV) is a common year in the Gregorian system, with 365 days and no leap day. In that calendar it begins on a Wednesday and is identified as the 2025th year of the Common Era and Anno Domini. Readers will encounter the year referenced in multiple chronological systems and cultural contexts across the world, and it is often abbreviated simply as "2025" in modern usage.
Calendar and numbering
Because 2025 is not divisible by four under the rules that determine leap years, it is a common year rather than a leap year. The rule that governs this is the Gregorian leap-year rule adopted in 1582: years divisible by 4 are usually leap years, except century years not divisible by 400. The designation "Common Era" (CE) and "Anno Domini" (AD) are equivalent conventions used to number years in this era. The year is also the 25th year of the 3rd millennium and the 25th year of the 21st century, and it falls in the middle of the 2020s decade.
Calendar details and conventions
In practical terms a common year beginning on Wednesday affects weekday placement of fixed-date holidays and business scheduling: dates move one weekday forward compared with a non-leap preceding year, and two weekdays forward when a leap year intervenes. Under the ISO week-date system, week 1 of the ISO year typically includes January 4, so the distribution of ISO weeks around the start of 2025 follows from January 1 falling on a Wednesday.
Notable scheduled events
Some major international events are planned for 2025. Among these, the World Expo is scheduled to take place in Osaka, Japan, during the spring and summer months, attracting governments, businesses and cultural participants from many countries. Other large conferences, sporting calendars and cultural festivals around the globe also mark 2025 as a year for routine and special gatherings.
Cultural observances and distinctions
In traditional East Asian calendars 2025 corresponds to the Year of the Snake in the Chinese zodiac cycle, a sequencing used for festivals and cultural symbolism in several countries. Various religious and civic calendars continue to assign observances within 2025 according to their own rules, so the year's significance differs by community and tradition.
Significance and uses
As the 25th year of the 21st century, 2025 is often treated as a milestone for planning, target dates and projections (for example, mid-decade reviews of policies and corporate strategies). Historians, archivists and data managers use the standard Gregorian year-numbering system for dating documents, while governments and organizations schedule anniversaries, elections and fiscal measures around the calendar year. For readers seeking technical details, the calendar entry for 2025 connects to broader topics such as the Gregorian calendar, civil-era designations like Common Era and Anno Domini, and the classification of the year as a common year beginning on Wednesday. Contextual links: 3rd millennium, 21st century, 2020s decade.
- Roman numeral: MMXXV
- Days: 365 (common year)
- Calendar start weekday (Gregorian): Wednesday