What Day Was I Born Calculator
Enter your birth date to find your day of the week, zodiac sign, Chinese zodiac animal, and birthstone.
Your Birthday Details
Birthday facts are calculated from your birth date using standard calendar algorithms.
Day of the week is determined using Zeller’s congruence or the built-in Date object, which accounts for leap years and calendar rules.
Western Zodiac Signs (Sun Signs):
- Aries: Mar 21 – Apr 19
- Taurus: Apr 20 – May 20
- Gemini: May 21 – Jun 20
- Cancer: Jun 21 – Jul 22
- Leo: Jul 23 – Aug 22
- Virgo: Aug 23 – Sep 22
- Libra: Sep 23 – Oct 22
- Scorpio: Oct 23 – Nov 21
- Sagittarius: Nov 22 – Dec 21
- Capricorn: Dec 22 – Jan 19
- Aquarius: Jan 20 – Feb 18
- Pisces: Feb 19 – Mar 20
Chinese Zodiac cycles every 12 years: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, Pig
Birthstones by month: Jan: Garnet | Feb: Amethyst | Mar: Aquamarine | Apr: Diamond | May: Emerald | Jun: Pearl | Jul: Ruby | Aug: Peridot | Sep: Sapphire | Oct: Opal | Nov: Topaz | Dec: Turquoise