Day Calculator

Day Calculator

Day Calculator

To get the day of the week for any day, use the calculator below. It also contains a little information as well as the month’s calendar.

ISO 8601 is an international standard

ISO 8601 is the worldwide standard for the interchange of date and time data. It is governed by the International Organization for Standardization (ISO). Even though most of the globe uses it, mainly the developed, not everyone follows this standard. ISO 8601 governs the globally acknowledged way of transmitting the day of the week, which employs an algorithm for computing the day of the week in a given month and year. Christian Zeller devised it, and it’s known as Zeller’s congruence. According to ISO 8601, Monday is the official first day of the week.

Calendar of the Gregorian Era

The Gregorian Calendar is based on the time it takes the moon to complete one full revolution around the Earth (approximately one month) and the Sun to complete one full circle around the Earth (about one month) (roughly one year). Because celestial bodies may be found in such proximity, it was standard practice to utilize them to tell time and date in ancient times. The Gregorian Calendar, as we know it now, was developed from this system.

What is the origin of their names?

The names of the days of the week are taken mainly from Roman gods’ names from the Hellenistic era, which spans the time between Alexander the Great’s death in 323 BC and the founding of the Roman Empire in 31 BC. Sunday, for example, is called after Sol, a Roman Sun deity. In contrast, Saturday is named after Saturnus, a Roman god of riches and freedom, among other things.
Monday was named after Luna, the divine personification of the moon, Tuesday was named after Mars, Wednesday was named after Mercurius (Mercury), Thursday was named after Jove (Jupiter), and Friday was named after Jupiter (Venus). Latin names for the days of the week spread across different cultures and languages, including French and German. It even infiltrated civilizations all around the globe, including Japan and India. For example, the Japanese term Friday is made from “Kinsei,” which signifies Venus, and “yobi,” which means day.
About Mars, the Japanese word for Tuesday, “ka youbi,” literally translates to “fire day.” In most Indian languages, the term for Thursday is “Guruvara,” where “guru” is in the style of Brhaspati, the gods’ guru and regent of the planet Jupiter.


• The most probable day for the US stock market to gain rather than decrease, according to statistics.
• The only day of the week that is an anagram for a single word is Monday.
• According to a 2011 survey, the typical individual complains for 34 minutes on Mondays, compared to 22 minutes on other days.
• Monday is the day of the week when individuals are most likely to gain weight.
• Monday is often known as “suicide day” because of the more significant number of suicides that occur on that day of the week.


• Tuesday is the most productive day of the week for many workers.
• The majority of employment applications are also filed on this day.
• Black Tuesday, which occurred on October 29th, 1929, is one of the most well-known Tuesdays.
• The Great Stock Market Crash happened on this day, signaling the onset of the Great Depression.


• Because of its location amid the workweek is also known as Hump Day in the United States. It's the hurdle that has to be overcome before reaching the finish line on Friday. • While Ash Wednesday is most often associated with the Christian holy day of prayer, fasting, and repentance, it may also be associated with a series of bushfires in 1983 in south-eastern Australia. • The bushfires are one of Australia's worst catastrophes, with 75 people killed and more than $300 million in damage.


• Maundy Thursday, also known as Holy Thursday, is the Thursday before Easter in the Christian tradition.
• Students use thirsty Thursdays and young professionals to refer to Thursday as the day to kick off the weekend with alcoholic beverages.


• When a Friday occurs on the 13th day of the month, it is considered unlucky. Nonetheless, it is seen as fortunate in other regions of the globe.
• Black Friday is the day following Thanksgiving in the United States, and it symbolizes the start of the Christmas shopping season. Due to the reduction of retail goods, it is typically a day of retail craziness. When a business opened its doors in New York in 2008, one employee was crushed to death.
• The Friday before Easter is known as Good Friday, and it commemorates the day of Jesus' crucifixion.


• In Israel, Saturday is designated as a day of rest. The majority of businesses, as well as public transit, are closed.
• Today is Australia and New Zealand's official polling day.
• Most youngsters in Sweden are only permitted to eat sweets on Saturdays.
• Saturdays were thought to be the only suitable days for hunting vampires since the monsters were in their graves.


• Sunday, rather than Monday, maybe the first day of the week in certain areas, such as the Middle East.
• The Christian faith recognizes Sunday as a day of rest and worship. As a consequence, it's also known as Sabbath Day or God's Rest Day. Almost all banks are closed on Sundays throughout the world. There will be a Friday the 13th in any month that begins on a Sunday.
• The workweek in several Middle Eastern nations starts on Sunday. One of the most significant sports events is Super Bowl Sunday, which features the championship contest between the top two teams in the National Football League (NFL).