Overview

Thursday is the day of the week that falls after Wednesday and before Friday. Depending on how a week is defined, it may be counted as either the fourth or the fifth day. It is a standard day of work in most countries and is associated with several recurring social, religious and commercial routines.

Name and etymology

The English name derives from Old English Þūnresdæg, literally “Thor’s day,” a dedication to the Norse god Thor and his thunderous attributes; medieval Germanic languages produced similar names. Many Romance languages instead reflect the classical planet-god Jove (Jupiter), tracing back to Latin dies Iovis. The contrast between divine associations—Thor in Germanic tongues and Jupiter in Latin-derived tongues—illustrates how ancient astronomy and mythology influenced weekday names across cultures. See also the Norse god: Thor.

Placement in calendars and numbering

Different calendar conventions place Thursday in different positions. International standard ISO 8601 sets Monday as the first day of the week, making Thursday the fourth day. In other conventions, particularly where Sunday is treated as the week’s start, Thursday is counted as the fifth day. These variations affect scheduling, business reporting and cultural descriptions; for example, practices in the United States often reflect a Sunday-first layout, while many international institutions follow the ISO model (week numbering and standards).

Cultural, religious and social significance

Several religious and civic observances fall on Thursdays. In Christianity, the days of Holy Week include Maundy Thursday, observed the week before Easter. In the United States, the national holiday of Thanksgiving is celebrated on a Thursday (specifically the fourth Thursday in November), a scheduling choice that has influenced travel and commerce patterns. Modern social customs have also attached to the day: for example, the informal online trend known as "Throwback Thursday" encourages sharing nostalgic photos and memories.

Uses, examples and notable facts

  • Business: Thursday is typically a full business day; many organizations finalize weekly reports or prepare for end-of-week activity.
  • Markets and history: Certain historical events tied to Thursdays are well known, and financial reporting sometimes recalls a notable day dubbed "Black Thursday" during a market crisis.
  • Language and literature: Nursery rhymes and folk sayings sometimes mention Thursday (for example, the rhyme about “Thursday’s child”), reflecting cultural attitudes toward the day.
  • International names: Across languages the day’s name may reference a thunder god or the Roman planet-god Jove, showing diverse mythological roots.

Distinctions and practical notes

When discussing weeks across countries or institutions, be explicit about the chosen week-start convention to avoid confusion. The same calendar day can be referred to differently depending on whether the week begins on Sunday or Monday. For comparative contexts—travel, legal deadlines, international business—this distinction is often significant and worth checking in source schedules and standards.

Overall, Thursday is an ordinary weekday with a rich linguistic and cultural history, occupying a stable place in modern weekly rhythms while carrying echoes of ancient myth and ritual. For related topics, consult resources on weekday naming, Norse and Roman mythology, and regional calendar practices.

United States | Week numbering and standards | Wednesday | Friday | Thor