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Discover what day of the week any date falls on. Find your birth day, plan events, and explore calendar details with zodiac signs, seasons, and more.
Friday, February 13, 2026 at 06:19:10 AM
Find the day of week for any date instantly. Works for past, present, and future dates with 100% accuracy.
Calculate days for entire date ranges (up to 366 days). See weekday distribution and export results.
Automatically shows zodiac sign, season, and quarter for any date. Perfect for astrology enthusiasts.
View day of year (1-365/366), week of year (1-52), and leap year status for complete calendar context.
Save unlimited dates with custom names and notes. All data stored locally for privacy.
Automatically saves your last 10 searches. Quickly revisit previously checked dates.
The day of week for any date is determined using mathematical algorithms that account for the Gregorian calendar system. Our calculator uses JavaScript's built-in Date object, which accurately handles leap years, century transitions, and all calendar complexities. The calculation considers that the calendar repeats every 400 years in the Gregorian system.
The seven-day week has been used for thousands of years across many cultures. Each day has unique characteristics:
Leap years affect day of week calculations because they add an extra day (February 29) to the calendar. This shifts all subsequent dates forward by one day of the week.
Leap Year Rules:
Understanding day and week numbers helps with planning and tracking:
Calendar Numbering:
Zodiac signs are based on the position of the sun relative to constellations throughout the year. Each sign spans approximately 30 days. Seasons are determined by the Earth's tilt and orbit around the sun: Spring (March-May), Summer (June-August), Fall (September-November), and Winter (December-February) in the Northern Hemisphere.
In most Western countries, Saturday and Sunday are considered the weekend, while Monday through Friday are weekdays. This distinction is important for business planning, event scheduling, and work-life balance. Our calculator clearly identifies weekend dates to help with planning. Note that some cultures and countries have different weekend days (e.g., Friday-Saturday in some Middle Eastern countries).
Want to know what day you were born? Simply enter your birth date and instantly see the day of the week. Share this fun fact with friends and family!
Use batch lookup to find all weekends in a date range. Perfect for planning parties, weddings, or events when you need weekend dates.
Save birthdays, anniversaries, and special dates with notes. You'll always know what day of the week they fall on for any year.
Verify historical dates for research or genealogy. The calculator works accurately for dates going back centuries in the Gregorian calendar.
Use batch lookup and export results to JSON. Import into Excel or Google Sheets for further analysis or integration with your planning tools.
Find zodiac signs for multiple dates to check astrological compatibility or explore birth chart details for astrology enthusiasts.
Simply select any date using the date picker in our calculator. It will instantly show you the day of the week (Monday, Tuesday, etc.), along with additional information like day of year, week number, zodiac sign, season, and whether it's a leap year.
Yes! Enter your birth date in the calculator and it will show you exactly what day of the week you were born on. You'll also see your zodiac sign, the season you were born in, and other interesting calendar facts about your birth date.
Absolutely! Our calculator works for any date in the past, present, or future. You can find the day of week for historical events, birthdays from decades ago, or plan for future dates years ahead.
No registration required. Completely free to use with unlimited date lookups and no hidden fees.
Get day of week instantly as you select dates. No waiting, no loading - just immediate accurate results.
Calculate days for entire date ranges. Export results for use in spreadsheets and other applications.
All saved dates stored locally in your browser. No server uploads, complete privacy and data security.
This Day of Week Calculator is developed and maintained by CalcFinex, a team dedicated to creating accurate, user-friendly calculation tools. Our calculators are built using industry-standard algorithms and thoroughly tested to ensure reliability for personal, educational, and professional use.
We follow established calendar calculation standards and continuously update our tools to maintain accuracy and incorporate user feedback. All calculations are performed using proven mathematical methods.
Your data never leaves your device. All saved dates and history are stored locally in your browser. We don't collect, store, or transmit any personal information to our servers.
This tool is designed for educational, personal, and professional use. It helps users understand calendar systems, plan events, and explore date-related information in an intuitive way.
We regularly review and update our calculators to ensure they meet current standards and user needs. Last updated: December 2024.