The fascinating story behind choosing Sunday as the first day of the week

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In our calendar, the week is made up of seven days, but the question arises: what is the first day of the week? This seemingly simple question has generated controversy over time and has led to different answers in different cultures. The answer may seem trivial, but it has implications for how we organize time and how we plan our activities. For digital marketing experts, knowing what the first day of the week is is crucial, as it can influence promotion strategy and campaign planning. In this article, we will explore the different perspectives on this topic and its importance in the world of digital marketing.

Unraveling the enigma: The day that really marks the beginning of the week
The traditional concept that Monday is the day that marks the beginning of the week has been widely accepted for decades. However, there is an ongoing debate as to whether the beginning of the week should be on Monday or Sunday. This conundrum has generated multiple theories and arguments, and it is important to analyze different perspectives to better understand this issue.

According to the international standard ISO 8601, Monday is officially china mobile phone number resource considered the first day of the week. This is based on the influence of the Gregorian calendar and the Western tradition that has taken root in many cultures. However, in some religions and in certain countries, Sunday is considered the first day of the week. This is due to religious and cultural influence, as in the case of Christianity, where Sunday is the day of rest and worship.

In the workplace and business world, Monday has historically been the day that most people begin their work week. This has led to the idea that Monday is the day that truly marks the start of the week. Businesses and digital marketers have taken advantage of this perception by scheduling marketing campaigns and strategies to coincide with the start of the work week.

However, in the digital and globalized age we live in, the notion of what day marks the beginning of the week can vary depending on culture and individual circumstances.


The choice of Sunday as the first day of the week has a fascinating history behind it. Although it is considered a day of rest in many cultures and religions today, its origins date back to ancient Rome.

In ancient Rome, the calendar was based on the lunar cycle, with eight days dedicated to different gods. However, in 321 AD, Emperor Constantine the Great decreed that Sunday would be the official day of rest in the Roman Empire.

The choice of Sunday as a day of rest was largely due to religious reasons. Constantine was a fervent follower of Christianity and regarded Sunday as the day on which Jesus rose from the dead. Therefore, establishing Sunday as a day of rest allowed Christians to celebrate their faith without interference.

The influence of the Roman Empire and Christianity in Europe led to Sunday being adopted as the first day of the week in most Western countries. This tradition continued even after the fall of the Roman Empire and spread to other cultures through colonialism and globalization.