Whatistheday/Born on January 15

Famous Birthdays on January 15

Zodiac SignCapricorn

Born January 15, 2026?Year of the Horse

This date in 2026View full date page →

Notable People Born on January 15

Birthday Zodiac: Capricorn

Everyone born on January 15 shares the Western zodiac sign Capricorn. The Chinese zodiac animal, however, depends on the birth year — someone born on January 15 in 2026 is a Horse, while a person born on the same date in 2014 is also a Horse (the cycle repeats every 12 years). Explore the Chinese calendar for more.

← Previous day Events on January 15 Next day →

Whatistheday – Day of the Week Calculator

Whatistheday is a free weekday calculator and multi-calendar date converter. Find the exact day of the week for any date — past, present, or future — with 100% mathematical accuracy.

Features

Weekday Calculator: Instantly determine what day of the week any date falls on, from 4000 BC to thousands of years in the future.
10+ Calendar Systems: Convert dates across Gregorian, Hebrew, Islamic (Hijri), Julian, Chinese Lunar, Hindu (Vikram Samvat), Maya (Long Count), Egyptian, and Babylonian calendars.
BC/BCE Support: Full support for ancient and historical dates using the Proleptic Gregorian and Julian calendar systems with astronomical year numbering.
Date Calculators: Business days calculator, age calculator, date difference, day of year, ISO week number, and leap year checker.
50+ Country Holidays: View public holidays and countdowns for over 50 countries worldwide.

Accuracy

Our engine uses the Proleptic Gregorian Calendar for modern and future dates and the Julian Calendar for dates before the Gregorian Reform of 1582. This dual-system approach ensures historically accurate weekday results for any era, making it ideal for academic research, genealogy, and religious calendar synchronization.

Whatistheday is completely free, requires no registration, and works on any device. All calculations are performed locally in your browser for instant results and total privacy.