2027 Forecast

House 3 of 12

The Third House — communication and siblings

The third house covers how you speak and learn, short journeys, and the people you grew up beside.

All twelve side by side: the 12 houses, birth chart calculator and house overlays between two charts.

Kind of house
Cadent the weakest kind
Natural sign
Gemini ruled by Mercury
Opposite house
9 the other end of its axis
Begins
60° past the ascendant, equal houses

Its neighbors, its opposite and the same house between two charts: 2nd house, 4th house, 9th house and 3rd house overlay in synastry.

Houses are the second of four layers, right after the big three — how to read a birth chart in the order that makes it learnable.

The Third House in Astrology: Communication and Siblings

What the Third House covers

The third house governs communication and the immediate environment: speaking, writing, early education, short journeys, neighbors, siblings and cousins. It is the everyday traffic of information — messages, errands, the commute and the local streets. In Hellenistic astrology it was the house of the Goddess and the Moon's joy, and it also covered religious practice and oracles; the link to learning and news came later.

Its older names

Medieval Latin Fratres — brothers
Hellenistic Thea, the Goddess
Planet’s joy Moon — the planet traditionally happiest here

Planets in house 3

The Sun, Moon and planets in the Third House

Sun in the 3rd house

Self-expression through words and ideas. Curious, talkative and restless; siblings or the local community often play a central role in life.

Moon in the 3rd house

The planet's joy. The mind is emotional and receptive, moods change with surroundings, and close ties with siblings or neighbors are common.

Mercury in the 3rd house

A quick, versatile thinker who learns fast, writes and talks easily, and keeps many conversations going at once.

Venus in the 3rd house

Diplomatic, pleasant speech and good relationships with siblings and neighbors. Writing, languages and social correspondence come naturally.

Mars in the 3rd house

Sharp, direct and argumentative in speech. Quick decisions and fast travel are typical; so are disputes with siblings or neighbors.

Jupiter in the 3rd house

An enthusiastic learner and communicator. Teaching, writing, publishing and short journeys bring opportunities; the risk is talking big.

Saturn in the 3rd house

Careful, serious thinking and speech. Early schooling or sibling relationships may have been difficult; later, disciplined study brings real authority.

Uranus in the 3rd house

An original, inventive mind that jumps between ideas. Unusual education, technology and sudden changes in routine are common.

Neptune in the 3rd house

An imaginative, intuitive way of thinking that suits poetry, music and images more than facts. Details and misunderstandings need checking.

Pluto in the 3rd house

Penetrating, investigative thought and persuasive speech. Words can carry real power, and communication with siblings may be intense.

A planet shows what, its sign how, and the house where — so these are starting points, colored by the sign and aspects in a real chart. An empty house is read through the planet ruling the sign on its cusp. Work out your own chart →

The Sun in house 3

What time of day puts the Sun in the Third House

Hours a day the Sun spends in the 3rd house, New York, 21st of each month, 2026
Hours a day the Sun spends in the 3rd house, New York, 21st of each month, 2026 Born in New York on June 21 between 12:59 AM and 2:10 AM EDT, a baby has the Sun in the 3rd house; on December 21 the window is 11:55 PM–2:26 AM EST. The Sun stays longest here in January (2 h 33 min a day) and shortest in May (1 h 11 min). 0 h2 h4 hJan: 2.55 h2.55 hFeb: 2.35 hMar: 1.9 hApr: 1.43 hMay: 1.18 hJun: 1.18 hJul: 1.42 hAug: 1.9 hSep: 2.35 hOct: 2.53 hNov: 2.52 hDec: 2.52 hJanFebMarAprMayJunJulAugSepOctNovDecSource: AstroHot calculation, equal houses, New York 40.7° Nastrohot.com

Born in New York on June 21 between 12:59 AM and 2:10 AM EDT, a baby has the Sun in the 3rd house; on December 21 the window is 11:55 PM–2:26 AM EST. The Sun stays longest here in January (2 h 33 min a day) and shortest in May (1 h 11 min).

Birth date, New YorkSun in the 3rd house
January 21 12:32–3:05 AM EST
February 21 1:10–3:31 AM EST
March 21 2:32–4:26 AM EDT
April 21 2:25–3:51 AM EDT
May 21 1:50–3:01 AM EDT
June 21 12:59–2:10 AM EDT
July 21 12:08–1:33 AM EDT
August 21 11:29 PM–1:23 AM EDT
September 21 11:21 PM–1:42 AM EDT
October 21 11:43 PM–2:15 AM EDT
November 21 11:19 PM–1:50 AM EST
December 21 11:55 PM–2:26 AM EST

Local clock time with daylight saving. At other latitudes the windows stretch or shrink; the birth chart calculator works it out for any place and minute.

Where this house sits in the structure

Natural sign Gemini — Air, Mutable
Natural ruler Mercury
House type Cadent
Opposite house Ninth House — Belief and distance
Trinity Houses of relationship — houses 3, 7, 11

This is cadent: precedes an angle and disperses — adaptation, learning and transition. It pairs with the Ninth House across the chart, and those two are read together — communication and siblings against belief and distance. An axis, not two separate topics.

Other houses

1 Self and appearance 2 Money and values 4 Home and roots 5 Creativity and pleasure 6 Work and health 7 Partnership 8 Shared resources and transformation 9 Belief and distance 10 Career and reputation 11 Community and hopes 12 The hidden

All twelve houses · a partner’s planets in your 3rd house · the planets

Cite this page

AstroHot. “The Third House in Astrology: Communication and Siblings.” Accessed October 27, 2026. https://astrohot.com/birth-chart/houses/3/

For Wikipedia {{cite web |title=The Third House in Astrology: Communication and Siblings |url=https://astrohot.com/birth-chart/houses/3/ |website=AstroHot |access-date=2026-10-27}}