Question: What date is the folk festival associated with Rambynas celebrated in Lithuania?

Context articles: Ruby for Lucy
National Folk Festival (United States)
Middletown Folk Festival
Rambynas
Lai Haraoba
Saint Jonas' Festival
Tablelands Folk Festival
Margaret Christl
Ali Ai Ligang
Owen McBride

Ruby for Lucy is an indie folk duo from Sydney, Australia.
 The band, consisting of Julie Stenton and Katrina Borghetti, is currently signed to Half A Cow Records.
 Their debut album, Catching Bream, was released in 2010.
 Ruby for Lucy is best known for opening for acts such as Abby Dobson and Skipping Girl Vinegar as well as music festivals such as The National Folk Festival, Illawarra Folk Festival, Dorrigo Folk & Bluegrass Festival, Folk in Broke, Cobargo Folk Festival, Nannup Music Festival.
 The two have also performed on Channel 7’s, Sunrise.
The National Folk Festival (NFF) is an itinerant folk festival in the United States.
 Since 1934, it has been run by the National Council for the Traditional Arts (NCTA) and has been presented in 26 communities around the nation.
 After leaving some of these communities, the National Folk Festival has spun off several locally run folk festivals in its wake, including the Lowell Folk Festival, the Richmond Folk Festival, the American Folk Festival and, most recently, the Montana Folk Festival.
 It will be held in Salisbury, Maryland on September 7-9, 2018, beginning a three-year run.
The Middletown, New Jersey, Folk Festival, which ran from 1968-1984, was a folk music and crafts event which attempted to show to local audiences the variety and breadth of American folk music.
 It was conceived and produced by Marlene and Dick Levine, who after attending the Newport Folk Festival in Rhode Island and the Fox Hollow Folk Festival in Petersburgh, New York, wanted to have a festival in their own community using local facilities.
Rambynas is a hill on the right bank of the Neman River in Rambynas Regional Park, Pagėgiai Municipality, western Lithuania.
 The current hill, about 46 m above sea level and about 40 m above the Neman, is a remnant of the larger hill that was destroyed by erosion.
 The hill was known as sacred among locals and played a role in the ceremonies of pagan Lithuanians.
 It is featured in many local legends and is protected by the state as a mythological object.
 A large stone at the top of the hill, known as the altar stone, was destroyed by a miller in 1811.
 Rambynas became popular with Prussian Lithuanians at the end of the 19th century who organized various events, most notably celebrations of the Saint Jonas' Festivals or Rasos (summer solstice), on the hill.
 They rebuilt the altar in 1928.
 The hill is popular with Lithuanian neo-pagans and hosts the annual celebrations of the summer solstice on 23 June.
Lai Haraoba is a festival associated with Meitei People, celebrated to please traditional deities of Sanamahism.
 Celebrated in honour of the sylvan deities known as Umang Lai, the festival represents the worship of traditional deities and ancestors.
 The festival is a part of recollection of the creation stories played by the deities with the first origin of this universe and evolution of the plants and animals through the will of Atiya Shidaba.
 Translated, Lai Haraoba means "merry making of the Gods" in Meitei.
Saint Jonas' Festival, also known as "Rasos" ("Dew Holiday"), "Joninės", "Kupolė", Midsummer Day or Saint John's Day) is a midsummer folk festival celebrated on June 24 all around Lithuania.
 While midsummer day is celebrated throughout Europe, many Lithuanians have a particularly lively agenda on this day.
 The traditions include singing songs and dancing until the sun sets, telling tales, searching to find the magic fern blossom at midnight, jumping over bonfires, greeting the rising midsummer sun and washing the face with a morning dew, young girls float flower wreaths on the water of river or lake.
 These are customs brought from pagan culture and beliefs.
The Tablelands Folk Festival, the sometime 'Yungaburra Folk Festival', is a music festival held in the village of Yungaburra, in north Queensland, Australia.
 The first ever "Festival of the Tableland", was held in Herberton on 8 May and 9 May 1981.
 It then moved to Yungaburra in 1982, where it has been held ever since.
 Various individuals and groups - including locals, the Cairns Folk Club and the Townsville Folk Club - ran the Festival for the next 11 years.
 Since 1994, the Festival has been organised by a committee of North Queenslanders.
Margaret Christl is a Scottish-Canadian folksinger.
 Christl was born in England, grew up in Scotland and West Wales and emigrated to Canada in 1966.
 She became active in the folk revival scene, playing many folk festivals, including the Mariposa Folk Festival, Edmonton Folk Festival and the Calgary Folk Music Festival, as well as the club and coffeehouse circuit.
 She has released a number of albums with different folk labels, including "The Barley grain for me".
 This album was recorded with Ian Robb and William Laskin in 1976 with Folk-Legacy Records and was dedicated to Edith Fowke, a very important scholar, folklorist and collector of folk music in Canada.
 Christl performs traditional Scottish and Canadian songs, as well as more contemporary songs.
 She is often accompanied by guitarists, but also plays the mountain dulcimer and the Bodhrán.
 Christl frequently performed with Ian Robb, Grit (William) Laskin and Stewart Cameron.
Ali-Aye-Ligang () is a spring festival associated with agriculture, specially with the beginning of the Ahu paddy cultivation.
 It is celebrated by the Mising or Mishing ethnic community of Assam, India.
 The festival marks onset of sowing seeds.
 The name of the festival is made up of three terms, 'Ali', legumes, 'Aye', seed and 'Ligang', to sow.
Owen McBride (born 1941) is an Irish-born folk singer and storyteller.
 He has lived in Toronto since his arrival in Canada in 1963 A veteran performer, McBride was a key figure in the folk revival movement in Canada and in North American.
 He was a perennial favourite at the Mariposa Folk Festival, performing almost every year from1964 to the '80s and frequently in subsequent years.
 McBride was featured in the folk music magazine "Hoot" in 1966.
 He is an active performer in the folk music club and festival scenes, including appearances at the Philadelphia Folk Festival.
 In 1970 the "New York Times" reported his ballad performances at the Philadelphia Festival as "sentimental and boozy".
 He performs traditional Irish and Scottish music and is also accomplished storyteller, with appearances on CBC radio and storytelling festivals.
 McBride has made several commercial recordings, including one on the Philo Records (folk) label.