Overview
The year 2052 (Roman numeral MMLII) is a leap year in the Gregorian calendar. In common chronological notation it is counted as 2052 of the Common Era (CE) and Anno Domini (AD). It is the 52nd year of the 21st century and the 3rd year of the 2050s decade, placing it within the 3rd millennium (3rd millennium). The year is described in calendar terms as a leap year beginning on a Monday under the rules of the Gregorian calendar.
Calendar characteristics
Under the Gregorian rule, a year is a leap year if it is divisible by 4, except for end-of-century years not divisible by 400. Because 2052 is divisible by 4 and not an excluded century year, it includes an extra day in February (February 29). With January 1 falling on a Monday, the ISO week-date system places week 1 starting on January 1, and the year contains 52 full weeks plus the extra leap day.
Key facts at a glance
- Roman numeral: MMLII
- Leap year status: leap year (extra day: February 29)
- Calendar start: Monday (Monday) in the Gregorian system (Gregorian calendar)
- Era labels: CE / AD
- Century and millennium: 21st century (21st century), 3rd millennium (3rd millennium)
Context and common uses
Years are reference points for civil administration, planning, age reckoning and historical chronology. For example, someone born in 2000 will reach the age of 52 during 2052. Financial and legal documents, long-range project plans and demographic projections commonly use the Gregorian year number when scheduling or describing events in a civil context.
Notable chronological notes
The pattern of leap years and weekday starts repeats in complex cycles because the Gregorian calendar corrects the Julian year length with century rules; simple 28-year cycles do not hold across century boundaries. Leap years affect fiscal calendars, recurring seasonal calculations and the scheduling of annual observances that rely on fixed dates. For technical or historical reference, primary calendar details for 2052 are summarized above and can be cross-referenced using the linked calendar concepts.
See also: basic calendar rules and century numbering for further background.