Why are English days named what they are?

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Ever wondered why Monday is called Monday or how Wednesday got its name? The names of the days of the week in English have fascinating origins, rooted in ancient history and steeped in mythology. Understanding these origins not only enriches our language ability but also provides intriguing insights into cultural heritage.

Origins of the days of the weeks names
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Origins of the seven-day week

The concept of a seven-day week has ancient origins, tracing back to the Babylonians around 1500 BCE. The Babylonians, keen astronomers, divided their lunar cycle into four weeks of seven days each, aligning with the phases of the moon. This practice was later adopted by the ancient Greeks and Romans, who found the seven-day cycle practical and meaningful.

The ancient Hebrews' influence also played a crucial role in establishing the seven-day week. According to the biblical account of creation, God created the world in six days and rested on the seventh, establishing a divine precedent for a seven-day cycle. This tradition was deeply ingrained in Hebrew culture and religious practices.

By the 1st century CE, the Romans had formalized the seven-day week, integrating it into their calendar system. This structure, combining astronomical observations and religious traditions, eventually spread throughout the Roman Empire and beyond, becoming the foundation of the modern seven-day week we use today.

In the Arabic and Hebrew calendars, the day begins at sunset, which contrasts with the Swahili concept of the day starting at sunrise and the Western world, where the day starts at midnight. This highlights the cultural influences on how days are numbered and identified within these different calendrical systems.

Origins of days of the week

How did Monday get its name? Meaning of Monday

Monday is named after the Moon. The Old English word for Monday was ѴDzԲԻæ, which translates to "Moon's day". This naming convention is quite common across various languages; for instance, in Latin, it's dies Lunae, also meaning "day of the Moon".

Tuesday name origin

Tuesday is named after the Norse god (also known as Tyr), a god of war and sky. The Old English term վɱæ directly reflects this association. The connection to Mars, the Roman god of war, can also be seen in other languages, such as French (mardi).

Why is Wednesday called Wednesday?

Wednesday is named after (or Woden), the chief god in Norse mythology. The Old English ´ǻԱæ translates to "Woden's day". This day is associated with Mercury in Roman mythology, which is why it's called éDZ in Spanish and mercredi in French.

Thursday name meaning

Thursday is named in honor of , the Norse god of thunder. The term 'Thor's day' serves as the etymological basis for Thursday. In Old English, it was Þū԰æ (Thunor’s day). The link to Jupiter, the Roman king of gods and god of thunder, explains the name jeudi in French and jueves in Spanish.

Friday history and meaning

Friday is named after (also known as Frigga or Freya), the Norse goddess associated with love and beauty. The Old English term æ means "Frigg's day". In Roman mythology, this day is linked to Venus, the goddess of love, which is reflected in names like viernes in Spanish and vendredi in French.

Saturday name origin

Saturday is unique among the English day names as it retains its Roman origin, specifically named after the Roman god , the Roman god of wealth and time. The Old English æٱԱæ directly references this deity. Interestingly, in other Germanic languages, the name often refers to the Sabbath, such as Samstag in German.

Sunday - The sun's day

Sunday is named after the Sun. Icelandic uniquely retains 'only the Sun' as the name for Sunday, rejecting names derived from pagan gods. The Old English ܲԲԲԻæ translates to “Sun’s day”, reflecting its importance and reverence in various cultures. This name is consistent across many languages, highlighting the widespread significance of the Sun.

The importance of understanding day names etymology

Understanding the etymology of day names helps language learners grasp the historical context and deepens their appreciation of English. These names are more than just labels for days; they are windows into ancient beliefs, cultures and linguistic evolution. The influence of Greek and Latin names on the naming of the days of the week during the Greco-Roman tradition is particularly notable, as the classical planets from Hellenistic astrology played a significant role in this process.

Exploring the origins of the day names in English reveals a blend of mythology, history and language evolution. From the Moon to Norse gods to Roman deities, each name tells a story of cultural significance.

Read our blog posts 'Fantasy, the English language and Tolkien' and 'How the English language has changed over the decades'.

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  • A young child sat at a desk in a classroom writing

    Grammar: how to tame the unruly beast

    By Simon Buckland

    “Grammar, which knows how to control even kings”- ѴDZè

    When you think of grammar, “rule” is probably the first word that pops into your mind. Certainly the traditional view of grammar is that it’s about the “rules of language”. Indeed, not so long ago, teaching a language meant just teaching grammatical rules, plus perhaps a few vocabulary lists. However, I’m going to suggest that there’s actually no such thing as a grammatical rule.

    To show you what I mean, let’s take the comparative of adjectives: “bigger”, “smaller”, “more useful”, “more interesting”, etc. We might start with a simple rule: for adjectives with one syllable, add -er, and for adjectives with two or more syllables, use more + adjective.

    But this doesn’t quite work: yes, we say “more useful”, but we also say “cleverer”, and “prettier”. OK then, suppose we modify the rule. Let’s also say that for two-syllable adjectives ending in -y or -er you add -er.

    Unfortunately, this doesn’t quite work either: we do say “cleverer”, but we also say “more sober” and “more proper”. And there are problems with some of the one-syllable adjectives too: we say “more real” and “more whole” rather than “realer” or “wholer”. If we modify the rule to fit these exceptions, it will be half a page long, and anyway, if we keep looking we’ll find yet more exceptions. This happens repeatedly in English grammar. Very often, rules seem so full of exceptions that they’re just not all that helpful.

    And there’s another big problem with the “rule approach”: it doesn’t tell you what the structure is actually used for, even with something as obvious as the comparative of adjectives. You might assume that it’s used for comparing things: “My house is smaller than Mary’s”; “John is more attractive than Stephen”. But look at this: “The harder you work, the more money you make.” Or this: “London is getting more and more crowded.” Both sentences use comparative adjectives, but they’re not directly comparing two things.

    What we’re actually looking at here is not a rule but several overlapping patterns, or paradigms to use the correct technical term:

    1. adjective + -er + than
    2. more + adjective + than
    3. parallel comparative adjectives: the + comparative adjective 1 … the + comparative adjective 2
    4. repeated comparative adjective: adjective + -er + and + adjective + -er/more and more + adjective

    This picture is more accurate, but it looks abstract and technical. It’s a long way from what we actually teach these days and the way we teach it, which tends to be organized around learning objectives and measurable outcomes, such as: “By the end of this lesson (or module) my students should be able to compare their own possessions with someone else’s possessions”. So we’re not teaching our students to memorize a rule or even to manipulate a pattern; we’re teaching them to actually do something in the real world. And, of course, we’re teaching it at a level appropriate for the student’s level.

    So, to come back to grammar, once we’ve established our overall lesson or module objective, here are some of the things we’re going to need to know.

    • What grammatical forms (patterns) can be used to express this objective?
    • Which ones are appropriate for the level of my students? Are there some that they should already know, or should I teach them in this lesson?
    • What do the forms look like in practice? What would be some good examples?

    Existing grammar textbooks generally don’t provide all this information; in particular, they’re very vague about level. Often they don’t even put grammar structures into specific CEFR levels but into a range, e.g. A1/A2 or A2/B1, and none fully integrates grammar with overall learning objectives.

    At app, we’ve set ourselves the goal of addressing these issues by developing a new type of grammar resource for English teachers and learners that:

    • Is based on the Global Scale of English with its precise gradation of developing learner proficiency
    • Is built on the Council of Europe language syllabuses, linking grammar to CEFR level and to language functions
    • Uses international teams of language experts to review the structures and assess their levels

    We include grammar in the GSE Teacher Toolkit, and you can use it to:

    • Search for grammar structures either by GSE or CEFR level
    • Search for grammar structures by keyword or grammatical category/part of speech
    • Find out at which level a given grammar structure should be taught
    • Find out which grammar structures support a given learning objective
    • Find out which learning objectives are related to a given grammar structure
    • Get examples for any given grammar structure
    • Get free teaching materials for many of the grammar structures

    Think of it as an open-access resource for anyone teaching English and designing a curriculum.