The birthday almanac

Birthdays by dateZodiac signs, famous birthdays, personality and 2027 numbers for every day of the year

The short answer

Pick your birthday below. Each of the 366 pages gives the Sun’s sign for that date in every year from 1940 to 2030, measured, not looked up in a fixed table: 325 dates are one sign all day every year, 29 are cusp days when the Sun changed sign during the date in some years, and 12 more change only for births far from Greenwich.

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Birthdays by month

Every day of a leap year has its page, 29 February included. Each date shows its usual sign in small letters; a gold edge marks a cusp day.

January birthdays

February birthdays

March birthdays

April birthdays

May birthdays

June birthdays

July birthdays

August birthdays

September birthdays

October birthdays

November birthdays

December birthdays

From the reference page to your own chart

What does your own chart say about you?

Choose love, work or purpose. Your reading is written from your chart. Your reading uses your own birth details.

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Birthdays by zodiac sign

The dates on which each sign is the usual one, counted at noon UTC from 1940 to 2030, and the cusp days at its edges, when the Sun changed sign during the date in some of those years.

Sign	Usual dates	Cusp days
Aries	March 21 to April 19	March 20, March 21, April 19, April 20
Taurus	April 20 to May 20	April 19, April 20, May 20, May 21
Gemini	May 21 to June 21	May 20, May 21, June 20, June 21, June 22
Cancer	June 22 to July 22	June 20, June 21, June 22, July 22, July 23
Leo	July 23 to August 22	July 22, July 23, August 22, August 23, August 24
Virgo	August 23 to September 22	August 22, August 23, August 24, September 22, September 23
Libra	September 23 to October 23	September 22, September 23, October 22, October 23, October 24
Scorpio	October 24 to November 21	October 22, October 23, October 24, November 21, November 22, November 23
Sagittarius	November 22 to December 21	November 21, November 22, November 23, December 21, December 22
Capricorn	December 22 to January 19	December 21, December 22, January 19, January 20, January 21
Aquarius	January 20 to February 18	January 19, January 20, January 21, February 18, February 19
Pisces	February 19 to March 20	February 18, February 19, March 20, March 21

How these pages are made

The Sun is measured, not read from a printed table. For every date and every year from 1940 to 2030 its position comes from the Swiss Ephemeris tables the Road of Ages uses, and a date is called a cusp day only where the Sun changed sign during it, counted in UTC, in at least one of those years. The decan is the ten-degree face the Sun holds at noon UTC, with its rulers from the Chaldean and triplicity systems explained in the decan guide.

The famous birthdays come from Wikidata, cross-checked against Wikipedia’s own words: a person whose birth or death the sources dispute is left out rather than guessed. The numbers follow the Almanac’s own method, the same as its calculators: the birthday number is the day reduced with 11 and 22 kept, and the Personal Year adds the reduced birth month and day to the Universal Year. Birthstones are the modern list; birth flowers are The Old Farmer’s Almanac’s.

The personality readings are written by hand for each decan, day number, element and cusp, in the tradition’s own terms. They are offered as a mirror for reflection, never as a verdict, and no page assigns a lucky number or colour: no calculation stands behind one.

Common questions

How do I find my zodiac sign from my birthday?

Open your date below. For most dates the Sun is in one sign all day in every year, and the page says so. On a cusp day it gives how often the Sun changed sign during that date from 1940 to 2030; your birth year and time then settle it, and the zodiac sign calculator can check it for you.

What is a cusp birthday?

A date on which the Sun moved from one sign into the next in some years. Counted in UTC from 1940 to 2030, 29 dates of the year are cusp days. At any instant the Sun is in exactly one sign, so a cusp birthday is settled by the year and the minute of birth, converted to UTC.

Where do the famous birthdays come from?

From Wikidata and Wikipedia’s “On this day” births: each date is checked against Wikidata’s own statements, and each day’s twelve best known are ranked by how many Wikipedia editions cover them. People remembered for violence, dictators and others unfit for a family page are left out.

What is the 2027 Personal Year?

2027 is a Universal Year 11 (2 + 0 + 2 + 7 = 11). Your Personal Year adds your reduced birth month and birth day to it, keeping master numbers, and every page works yours out for its date.