Names of the days of the week
Italian cameo bracelet representing the names of the days of the week.

Have you ever wondered where did the modern English names of the days of the week come from? The English (and some other languages) names of the days of the week originally were influenced by a religious system called Astrolatry and/or Astrotheology.

What are Astrolatry and Astrotheology?

Astrolatry is a religious system that practices the worship of the stars and other heavenly bodies. These heavenly bodies and the stars are worshiped or associated as gods. Astrolatry comes from the Greek words “astro” meaning “star” and “latris’ meaning “worshipper”. Typically astrolatry is associated to (ancient) polytheistic religions (eg: Babylonian, ancient Egyptian, ancient Greek, etc).

Heavenly bodies represented by Jesus and his disciples in astrotheology theory.

Astrotheology (Greek: “study of God/s based upon the relation to the stars”) is similar to astrolatry with one of the differences is that it might be applied to monotheistic religions. Some authors (such as Acharya S and Kersey Graves) have proposed that Christianity and to a certain degree Judaism and Islam are in fact a form of Astrotheology – read this post. I am not saying that I agree with this theory but that’s another topic for another day. However, I have to agree that the explanation is quite convincing.

Both the teachings of Astrolatry and Astrotheology are based upon the knowledge of Astrology.

What is Astrology?


Astrology comes from the Greek word “astrologia” which means “the study of the stars”. Originally astrology was identical with astronomy (Greek: “the star arrangement”).

However, in the past there was no distinction between astrologers and astronomers. Astrologers/astronomers would study the stars, made observations of the way the heavenly bodies move and made predictions about how the movements might impact on events on Earth as well as on individuals.

Gradually, at about 14th century CE, astronomy splits from astrology. And by the end of the 16th century CE astrology was rejected as science, because it has been argued that there is no empirical evidence to support the premises or purported effects outlined in astrological traditions.

Where and when did Astrology begin?

Babylonian Astrology

It has been theorized that human beings started studying the heavenly bodies to measure, record and predict seasonal changes to ease their lives on earth (for eg: the influence of the moon upon tides and rivers, to organize communal calendar, etc).

Markings of bones and cave walls, which show lunar cycles were noted as early as 25,000 years ago. However, generally it is agreed that the first organized system of astrology only appeared in Babylonia at around the 2nd millennium BCE or probably in Sumeria at around the 3rd millennium BCE.

Other scholars have argued that the Egyptians have also practiced some sort of astrology at ca. 2,000 BCE based on the inscription of Harkhebi that mentions the exaltation of Venus, which matches exactly the pattern of certain specially honored decans in a prayer that is found on a number of coffins dating back to the Middle Kingdom, ca. 2,000 BCE.. (Ref: Conman Joanne, The Egyptian Origins of Planetary Hypsomata – Discussions in Egyptology, Vol. 64 2006-2009, 7-20).

In 332 BCE, Egypt was conquered by Alexander the Great of the ancient Greek of Macedon and so Egypt came under Hellenistic rule and influence. Thus, the Greeks became exposed to the cultures and cosmological ideas of the Egyptians and other ancient Middle Easterners.

The influence was then carried over to the Romans, after the Battle of Corinth in 146 BCE when they conquered the Greeks.

Names of the Days by Numbers

It should be noted that originally the week in many cultures begin with Sunday and not Monday. The change of Monday as the first day of the week has only been established recently by the international standard ISO 8601 (the first edition was published in 1988).

For example, the Hebrew’s days of the week begin with Sunday, and it’s called “yom rishon” meaning “day one”. The same goes for the Arabic “(yaum) al-ahad” meaning also “day one”. Then the names of the days continue with “day two”, “day three” and so forth. Except for the 7th day which is called “yom Sabbat” in Hebrew or “(yaum) as-sabt in Arabic meaning “Sabbath” day which is corresponding to the day after the six-day Creation of the world by God. Sabbath corresponds to Saturday.

Additionally in Arabic, the 6th day is called (yaum) al-jumah meaning “the day of the gathering” when Muslims pray together at the mosque on Fridays.

Modern Greek days are also numbered, although interestingly the 1st day (Sunday) is called Kyriake (meaning the Lord’s day – following Christian’s tradition) but the 7th day (Saturday) is still called the Sabbath (Savvato) like in Hebrew and also the 6th day (Friday) is called Paraskeue (meaning “preparation”) - which came from the preparation day before the Sabbath. This is because there were many Jews in the Hellenistic and Roman periods. (For more info read the following article: Origin of Easter).

Names of Gods Became Names of Days

Being practitioners of astrolatry, the ancient Greeks named the days of the week according to the names of their heavenly bodies gods: i.e. the sun, the moon and the five naked eye planets. They named the days of the week as the “Theon Hemerai” meaning the “days of the gods”. The names of the gods and goddess are:
1. Helios (sun)
2. Selenes (moon)
3. Ares (Mars)
4. Hermes (Mercury)
5. Zeus (Jupiter)
6. Aphrodite (Venus)
7. Cronus (Saturn)

Indian astrology adopted the concept of days under the regency of a planet under the term vāra, the days of the week being called aditya-, soma-, mangala-, budha-, guru-, sukra- and sani-vāra.

Sukra is a name of Venus (regarded as a son of Bhrgu); guru is here a title of Brhaspati, and hence of Jupiter; Budha "Mercury" is regarded as a son of Soma, i.e. the Moon.

Knowledge of Greek astrology since about the 2nd century BC, but references to the vāra occur somewhat later, during the Gupta period (Yajnavalkya Smrti, c. 3rd to 5th century), i.e. at roughly the same period the system was introduced in the Roman Empire.

Then more or less at the same period, the Romans substituted their equivalent gods for the Greek gods:
1. Solis/Apollo
2. Luna
3. Mars
4. Mercury
5. Jove/Jupiter
6. Venus
7. Saturn

Norse Gods of the Week Days
Helios, Luna, Tyr, Woden, Thor, Freya and Saturn

The Germanic peoples (incl. the Norse and English) also substituted roughly the same gods except for Mercury and they did not substitute Saturn. So here are the names of the gods/goddess/heavenly bodies:
1. Sol
2. Mani
3. Tiu - an English/Germanic god of war, identified with the Norse god Tyr and the Roman Mars.
4. Woden - a chief Anglo-Saxon/Teutonic god, identified with the Norse Odin.
5. Thor - a Norse god of thunder, loosely connected to Jupiter who also creates thunder.
6. Freya – a Teutonic goddess of love and beauty, identified with the Roman Venus
7. Saturn

Various Names of Days of the Week


Isn’t that funny how the English language, the global lingua franca, mostly spoken in modern predominantly Christian/secular/atheists countries (i.e. the UK, the US, Canada, Australia and New Zealand) still uses the name of pagan gods to name the days of the week?

The history of all religions and mythologies are so intertwined, deeply rooted and cannot be separated in our everyday lives. Religion has influence on politics, law, education, culture, wisdom, languages and standard of truth on every culture in the world, even in secular Western countries.

“First, it is an empirical fact that biblical morality has been well enough understood and effectively enough applied to constitute perhaps the most important single influence on modern Western legal systems (the European civil law system and the Anglo-American common law).”
(John Warwick Montgomery – professor of law and humanities in his lecture “Law & Morality” at the University of Luton, England in 1994)


Read this series, to know more about religions, world mythologies, alternative history (ancient aliens, Atlantis/Lemuria theories) and their interconnection with science.



Origin of Easter: Biblical or Pagan?
The Bloody Origin of Valentine's Day
Origin of Christmas