Overview

January 1 is the first day of the year in the Gregorian calendar. In ordinary years there are 364 days left in the year; in leap years the count is one day greater due to the extra day in February — see leap years. As the civil new year it is recognized by most modern states and is commonly referred to as New Year's Day.

Calendar context and timing

The placement of the new year on January 1 has a long calendrical history. The modern date follows reforms that standardized the length of the year and refined when leap days occur. National, religious, and cultural calendars sometimes set the new year at different moments (for example, lunar or lunisolar new years), but January 1 remains the international civil starting point for numbering years in everyday use.

History and development

The choice of January 1 as a significant calendar date goes back to antiquity and has been adjusted over time by different authorities. In Europe the day increasingly came to be observed as New Year's Day during the later medieval period; starting around the 1200s it was commonly called New Year's Day in many regions and by later centuries became widely established as the civil new year in most countries (New Year's Day).

Common observances

  • Public holiday status: many countries close government offices, banks and schools on January 1.
  • Festive traditions: fireworks, countdowns to midnight, parties and televised events (for example, large public gatherings and iconic ceremonies in major cities).
  • Personal practices: the making of New Year's resolutions, first-footing customs in some cultures, and cultural or family rituals aimed at luck or renewal.
  • Religious observances: some faith communities hold special services; for example, particular liturgical commemorations occur in Christian calendars on this date.

Notable distinctions and context

Although January 1 is the civil start of the year for most of the world, many cultures observe their new year on other dates determined by lunar cycles, seasonal markers, or religious calendars (for instance, Chinese New Year, Rosh Hashanah, or Nowruz). Administrative practices vary: some fiscal years, academic years, and legal systems follow different start dates. The global prominence of January 1 stems from its role in the international calendar used for civil and commercial purposes.

Across time zones the moment when January 1 arrives is successive rather than simultaneous, so celebrations and legal observances begin at different local times around the globe. For further reading about calendar systems and historical changes, see general references on the Gregorian calendar and the handling of leap years.