Day of the Week Calculator

Welcome to the Day of the Week Calculator, your comprehensive tool for discovering what day any date falls on. Whether you're curious about a historical event, planning a future celebration, or simply want to know what day you were born, this calculator provides instant results with rich contextual information including planetary associations, zodiac signs, and seasonal data.

How to Use This Calculator

1. Enter a date: Use the date picker or try one of the quick example dates. The calculator accepts dates from year 1 to 9999.
2. Click "Find Day of the Week": The calculator will instantly process your date.
3. View your results: See the day of the week displayed prominently, along with a visual calendar, date statistics, zodiac sign, season information, and multiple date formats.

Understanding the Results

Our calculator provides comprehensive information about your chosen date:

• Day of the Week: The primary result showing which day (Monday-Sunday) your date falls on.
• Planetary Association: Each day is traditionally associated with a celestial body from ancient astronomical traditions.
• Mini Calendar: A visual representation showing your date highlighted within its month.
• Day Characteristics: Traditional traits and meanings associated with each day of the week.
• Zodiac Sign: The astrological sign active on your chosen date.
• Season: What season the date falls in (for both Northern and Southern hemispheres).
• Date Statistics: Day of year, week number, quarter, and year progress.
• Multiple Formats: Your date displayed in various international formats.

The Seven Days and Their Origins

The seven-day week has ancient origins, with each day named after celestial bodies and deities:

Practical Applications

Event Planning

Find out what day of the week a future date falls on to plan weddings, parties, meetings, or vacations. Check if important dates will fall on weekends or weekdays.

Historical Research

Discover what day significant historical events occurred. Was D-Day (June 6, 1944) on a weekend? What day of the week was the Declaration of Independence signed?

Birthday Curiosity

Find out what day you were born on, or determine what day of the week your next birthday will be. Many cultures believe the day you were born influences your personality.

Academic and Business Planning

Plan academic schedules, business quarters, and project timelines by understanding how dates align with days of the week.

Frequently Asked Questions

How do I find what day of the week a date falls on?

Enter any date in the Day of the Week Calculator to instantly find out what day it falls on. The calculator works for dates from year 1 to 9999 and shows the day name along with additional information like the zodiac sign, season, and day characteristics.

What day of the week was I born?

Enter your birth date in the calculator to discover what day of the week you were born. You'll also learn about the planetary association and characteristics traditionally linked to that day.

Why are days of the week named after planets?

The seven-day week and day names come from ancient Babylon and were later adopted by the Romans, who named each day after the seven classical planets. Sunday (Sun), Monday (Moon), Tuesday (Mars/Tiw), Wednesday (Mercury/Woden), Thursday (Jupiter/Thor), Friday (Venus/Frigg), and Saturday (Saturn).

What is the day of the year number?

The day of year number (also called ordinal date) represents which day of the year a date falls on, ranging from 1 (January 1st) to 365 or 366 (December 31st in leap years). This calculator automatically shows this number for any date.

How do leap years affect day calculations?

Leap years have 366 days instead of 365, with February 29th added. This calculator automatically accounts for leap years and shows whether the year is a leap year. Leap years occur every 4 years, except for years divisible by 100 (unless also divisible by 400).

Additional Resources

• Week - Wikipedia
• Names of the Days of the Week - Wikipedia