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Birthday signs · Leo season

What zodiac sign is August 15?

Leo is where August 15 sits in the tropical zodiac. Within the 101 years from 1930 through 2030, the Sun stood in Leo at noon UTC on August 15, at 21.69° to 23.18° Leo. On day 23 to 25 of Leo season, August 15 is in its late part, with the element fire.

Calculated across 1930–2030 · checked .

August 15 is Leo

Leo at noon UTC101 of 101 years, 1930–2030
Nearest change of signat least 7 days away
Birth time needed for the signno

Exact sign finder

August 15 at a glance

Sign♌︎ Leo, the Lion
Element and modefire, fixed
Polaritypositive (masculine)
Rulerthe Sun (traditional)
Sun on this date21.7° to 23.2° Leo at noon UTC, 1930–2030
Day of the seasonday 23 to 25 of Leo season
Decanthird (20°–30°), face of Mars
Sidereal sign (Lahiri)Cancer
Day number6 (modern numerology)

Rulers: Ptolemy; modern list.

The decan: late Leo

Noon Sun21.69° to 23.18° Leo
Decanthird (20°–30°)
Face ruler, Chaldean orderMars

Faces after Lilly, in Chaldean order.3

What a decan is

Zodiac wheel marking Leo and the Sun on August 15Twelve equal 30-degree signs with Leo filled and its decan lines at 10 and 20 degrees. The Sun on August 15 is marked from 21.7° to 23.2° Leo.♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎
Filled: Leo. Dashed: decan lines. Teal arc: Sun on August 15.

August 15 by the numbers

Day number6 (1 + 5 = 6)
Month-day number5 (8 + 6 = 14, then 1 + 4 = 5)
Systemmodern numerology, digit sums

Digit sums as numerology guides give them.4

Where the date falls in the season

Day of Leo season23 to 25
Leo season openedJuly 22 (7 years) or July 23 (79) or July 24 (15)
Leo season closedAugust 22 (65 years) or August 23 (36)
Element and modefire, fixed
Traditional rulerthe Sun

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

Born at this point in Leo season

Someone born on August 15 arrives near the end of Leo's stretch, when the summer heat is still on but the days have started to shorten. They carry a bright, generous confidence into a room, and people lean on it. The hard part comes when the spotlight fades and they are left to keep the warmth going for others. Their steadiness is real, but so is their need to hear that they matter when no one is clapping.

Interpretation, not prediction.

The sidereal sign

Sidereal sign, Lahiri ayanamsaCancer, all 101 years
Noon Sun, sidereal Cancer28.2°–29.5°
ConventionIndian (Vedic) astrology

Ayanamsa convention.5

Tropical and sidereal, explained

Born on August 15

  • Napoleon (1769–1821), French military leader, French Emperor 1804–1814 and again in 1815
  • Walter Scott (1771–1832), Scottish novelist, poet and playwright
  • Sri Aurobindo (1872–1950), Indian Bengali philosopher, yogi, maharishi, poet and nationalist
  • Louis de Broglie (1892–1987), Nobel laureate credited to pioneer the discovery of wave character of matter
  • Gerty Cori (1896–1957), Austro-Hungarian-American biochemist
  • Melinda French Gates (1964), American philanthropist
  • Ben Affleck (1972), American film actor, director and screenwriter
  • Jennifer Lawrence (1990), American actress and producer

Birth dates checked on Wikidata.6

August 15 in history

Observed on this date:

Events on August 15:

6

How the answer was worked out

For each year from 1930 through 2030, Astronomy Engine calculated the Sun's tropical longitude on August 15 at noon UTC, and each year's sign was read from that longitude.1 How the Machine works

Questions people also ask

What zodiac sign is August 15?

Counting the Sun at noon UTC, August 15 is Leo in every one of the 101 sampled years from 1930 to 2030.

Is August 15 on a zodiac cusp?

No. On all August 15 dates from 1930 to 2030, the noon Sun was in Leo, and August 15 is at least 7 days from the nearest change of sign.

What decan is August 15?

August 15 is found in the third decan of Leo (20°–30°) in every sampled year, and the corresponding Chaldean face ruler is Mars.

What is the birthday number for August 15?

In modern numerology, August 15 has a day number of 6 and a month-day number of 5, both found by adding digits.

Sources

  1. Astronomy Engine JavaScript reference — Don Cross, Astronomy Engine. Verified .
  2. Ptolemy, Tetrabiblos, Book I, sections 11-21 — LacusCurtius, University of Chicago. Verified .
  3. Decan (astrology): the faces of the planets (after Lilly) — Wikipedia. Verified .
  4. Life Path Number — Numerology.com (practitioner site). Verified .
  5. Ayanamsa (Lahiri and other sidereal conventions) — Wikipedia. Verified .
  6. Wikipedia: August 15 — Wikipedia (Wikimedia On this day feed); birth dates checked on Wikidata. Verified .

Written by The Midway Machine. Facts checked against 6 sources on 2026-10-19.

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