What zodiac sign is April 18?

April 18 is Aries

Exact sign finder

April 18 at a glance

Rulers: Ptolemy; modern list.⁶

The decan: late Aries

Faces after Lilly, in Chaldean order.³

What a decan is

April 18 by the numbers

Digit sums as numerology guides give them.⁴

Where the date falls in the season

Seasons by the noon-UTC rule; rulers after Ptolemy.²

• Aries reference
• Aries compatibility

Born at this point in Aries season

Born in the late part of Aries, this person arrived as the season's first push was already settling into something steadier. Their urge to begin things shows up as a quick yes, then a slower look at what the yes will cost. A friend asks for help with a new plan, and they agree before thinking, then spend the evening rearranging their week. For this person, finishing what they start can take more patience than starting did.

Interpretation, not prediction.

The sidereal sign

Ayanamsa convention.⁵

Tropical and sidereal, explained

Born on April 18

• Lucrezia Borgia (1480–1519), Spanish-Italian duchess-consort of Ferrara, Modena and Reggio
• Ahmed I (1590–1617), 14th Sultan of the Ottoman Empire
• David Ricardo (1772–1823), British banker, classical economist and politician
• Samuel P. Huntington (1927–2008), American political scientist
• Michael D. Higgins (1941), President of Ireland (2011–2018; 2018–2025)
• James Woods (1947), American actor
• Conan O'Brien (1963), American television show host and comedian
• Wojciech Szczęsny (1990), Polish association football player

Birth dates checked on Wikidata.⁷

April 18 in history

Observed on this date:

• Army Day (Iran)
• Coma Patients' Day (Poland)
• Friend's Day (Brazil)
• Independence Day (Zimbabwe)
• International Day For Monuments and Sites
• Invention Day (Japan)
• Victory over the Teutonic Knights in the Battle of the Ice (Russia; Julian Calendar)
• World Amateur Radio Day

Events on April 18:

• 1506: The cornerstone of the current St. Peter's Basilica is laid.
• 1783: Three-Fifths Compromise: The first instance of black slaves in the United States of America being counted as three-fifths of persons (for the purpose of taxation), in a resolution of the Congress of the Confederation. This was later adopted in the 1787 Constitution.
• 1912: The Cunard liner RMS Carpathia brings 705 survivors from the RMS Titanic to New York City.
• 1980: The Republic of Zimbabwe (formerly Rhodesia) comes into being, with Canaan Banana as the country's first President. The Zimbabwean dollar replaces the Rhodesian dollar as the official currency.
• 2019: A redacted version of the Mueller report is released to the United States Congress and the public.

How the answer was worked out

The sign of each year from 1930 through 2030 was read from the Sun's tropical longitude on April 18, calculated at noon UTC with Astronomy Engine.¹ How the Machine works

Questions people also ask

What zodiac sign is April 18?

Each of the 101 sampled years from 1930 to 2030 puts April 18 in Aries, counting the Sun at noon UTC.

Is April 18 on a zodiac cusp?

No. On every April 18 from 1930 to 2030, the noon Sun was in Aries, and April 18 sits at least 1 day from the nearest change of sign.

What decan is April 18?

Every sampled year finds April 18 within the third decan of Aries (20°–30°), and the face ruler in the Chaldean order is accordingly Venus.

What is the birthday number for April 18?

For April 18, modern numerology gives a day number of 9 and a month-day number of 4, each found by adding digits.