Dunsink () is a

townland A townland ( ga, baile fearainn; Ulster-Scots: ''toonlann'') is a small geographical division of land, historically and currently used in Ireland and in the Western Isles in Scotland, typically covering . The townland system is of Gaelic orig ...

in the

civil parish In England, a civil parish is a type of Parish (administrative division), administrative parish used for Local government in England, local government. It is a territorial designation which is the lowest tier of local government below district ...

Castleknock Castleknock () is an affluent suburb located west of the centre of Dublin city, Ireland. It is centered on the village of the same name in Fingal. In addition to the suburb, the name "Castleknock" also refers to older units of land division: ...

Dublin Dublin (; , or ) is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2016 ...

, in

Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...

. The townland has an area of approximately , and had a population of 323 people as of the 2011 census. The townland is the site of

Dunsink Observatory The Dunsink Observatory is an astronomical observatory established in 1785 in the townland of Dunsink in the outskirts of the city of Dublin, Ireland. Alexander Thom''Irish Almanac and Official Directory''7th ed., 1850 p. 258. Retrieved: 2011-02 ...

, where

William Rowan Hamilton Sir William Rowan Hamilton LL.D, DCL, MRIA, FRAS (3/4 August 1805 – 2 September 1865) was an Irish mathematician, astronomer, and physicist. He was the Andrews Professor of Astronomy at Trinity College Dublin, and Royal Astronomer of Ire ...

and

Hermann Brück Hermann Alexander Brück CBE FRSE (15 August 1905 – 4 March 2000) was a German-born astronomer, who spent the great portion of his career in various positions in Britain and Ireland. Education Hermann Brück was born in Berlin. His father ...

were directors. Built in 1783–1785, it is the oldest scientific institution in Ireland. The observatory houses a 12-inch (30 cm) refracting telescope which was built by Grubbs of Dublin using a French manufactured lens. It is situated on a hill 8 km northwest of Dublin's city centre, where the astronomy section of the School of Cosmic Physics in the

Dublin Institute for Advanced Studies The Dublin Institute for Advanced Studies (DIAS) ( ga, Institiúid Ard-Léinn Bhaile Átha Cliath) is a statutory independent research institute in Ireland. It was established in 1940 on the initiative of the Taoiseach, Éamon de Valera, in Dub ...

is located. The ''1880 Definition of Time Act'' set the official time in Ireland to be

Dublin Mean Time Ireland uses Irish Standard Time (IST, UTC+01:00; ga, Am Caighdeánach Éireannach) in the summer months and Greenwich Mean Time ( UTC+00:00; ''Meán-Am Greenwich'') in the winter period. (Roughly half of the state is in the 7.5°W to 22.5° ...

. This was computed as the time at Dunsink, which was about GMT-25m21. In 1916, another act moved

Greenwich Mean Time Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London, counted from midnight. At different times in the past, it has been calculated in different ways, including being calculated from noon; as a co ...

Dunsink time Dunsink () is a townland in the civil parish of Castleknock, Dublin, in Ireland. The townland has an area of approximately , and had a population of 323 people as of the 2011 census. The townland is the site of Dunsink Observatory, where Will ...

is mentioned five times in

James Joyce James Augustine Aloysius Joyce (2 February 1882 – 13 January 1941) was an Irish novelist, poet, and literary critic. He contributed to the Modernism, modernist avant-garde movement and is regarded as one of the most influential and important ...

's novel, ''Ulysses''. Formerly the location of "Dublin’s biggest landfill facility", Dunsink is also the site of a major unofficial

Traveller Traveler(s), traveller(s), The Traveler(s), or The Traveller(s) may refer to: People Generic terms *One engaged in travel *Explorer, one who searches for the purpose of discovery of information or resources *Nomad, a member of a community withou ...

encampment, the subject of considerable media coverage in 2007. By 2008,

Fingal County Council Fingal County Council ( ga, Comhairle Contae Fhine Gall) is the authority responsible for local government in the county of Fingal, Ireland. It is one of three local authorities that comprised the former Dublin County Council before its abolit ...

had reportedly compensated those in the encampment to "vacate heland".

References

{{Irish Travellers Castleknock Irish Traveller-related controversies Townlands of the barony of Castleknock