Thursday instance of day of the week
Thursday is the day of the week between Wednesday and Friday. According to the ISO 8601 international standard, it is the fourth day of the week. In countries which adopt the "Sunday-first" convention, it is the fifth day of the week.Name
See Names of the days of the week for more on naming conventions.Vishnu's/Buddha's/Dattatrey's Day
There are a number of modern names imitating the naming of Thursday after an equivalent of "Jupiter" in local tradition. 
In most of the languages of India, the word for Thursday is Guruvāra – vāra meaning day and Guru being the style for Bṛhaspati, guru to the gods and regent of the planet Jupiter. This day marks the worship of Lord Vishnu/Lord Buddha and Lord Dattatreya in Hinduism. In Sanskrit language, the day is called Bṛhaspativāsaram (day of Bṛhaspati). In Nepali language, the day is called Bihivāra as derived from the Sanskrit word same like in Hindi vara means day and Bihivāra meaning Bṛhaspati. In Thai, the word is Wan Pharuehatsabodi, also in Old Javanese as Respati or in Balinese as Wraspati – referring to the Hindu deity Bṛhaspati, also associated with Jupiter.
En was an old Illyrian deity and in his honor in the Albanian language Thursday is called "Enjte". 
In the Nahuatl language, Thursday is Tezcatlipotōnal (Nahuatl pronunciation: [teskat͡ɬipoˈtoːnaɬ]) meaning "day of Tezcatlipoca".
In Japanese, the day is 木曜日 (木 represents Jupiter, 木星), following East Asian tradition.Fourth day
In Slavic languages and in Chinese, this day's name is "fourth" (Slovak štvrtok, Czech čtvrtek, Slovene četrtek, Polish czwartek, Russian четверг chetverg, Bulgarian четвъртък, Serbo-Croatian четвртак / četvrtak, Macedonian четврток, Ukrainian четвер chetver). Hungarian uses a Slavic loanword "csütörtök". In Chinese, it is 星期四 xīngqīsì ("fourth solar day"). In Estonian it's neljapäev, meaning "fourth day" or "fourth day in a week". The Baltic languages also use the term "fourth day" (Latvian ceturtdiena, Lithuanian ketvirtadienis).Cultural and religious practices
Christian holidays
In the Christian tradition, Maundy Thursday or Holy Thursday is the Thursday before Easter — the day on which the Last Supper occurred.  Also known as Sheer Thursday in the United Kingdom, it is traditionally a day of cleaning and giving out Maundy money there.  Holy Thursday is part of Holy Week.
In the Eastern Orthodox Church. Thursdays are dedicated to the Apostles and Saint Nicholas. The Octoechos contains hymns on these themes, arranged in an eight-week cycle, that are chanted on Thursdays throughout the year.  At the end of Divine Services on Thursday, the dismissal begins with the words: "May Christ our True God, through the intercessions of his most-pure Mother, of the holy, glorious and all-laudable Apostles, of our Father among the saints Nicholas, Archbishop of Myra in Lycia, the Wonder-worker…"
Ascension Thursday is 40 days after Easter, when Christ ascended into Heaven.Hinduism
In Hinduism, Thursday is associated with the Navagraha Brihaspati, whom devotees of this graha will fast pray and fast on Thursdays. The day is dedicated to the deity Vishnu or his avatars, such as Rama, Parshurama, Narasimha, and Buddha. However, Wednesday is dedicated to his avatars of Krishna and Vithoba. Devotees usually fast on this day in honor of Vishnu and his avatars, especially Vaishnava Hindus.Islam
In Islam, Thursdays are one of the days in a week in which Muslims are encouraged to do voluntary fasting, the other being Mondays.Judaism
In Judaism, Thursdays are considered auspicious days for fasting.  The Didache warned early Christians not to fast on Thursdays to avoid Judaizing, and suggested Fridays instead.
In Judaism the Torah is read in public on Thursday mornings, and special penitential prayers are said on Thursday, unless there is a special occasion for happiness which cancels them.Druze faith
Formal Druze worship is confined to weekly meeting on Thursday evenings, during which all members of community gather together to discuss local issues before those not initiated into the secrets of the faith (the juhhāl, or the ignorant) are dismissed, and those who are "uqqāl" or "enlightened" (those few initiated in the Druze holy books) remain to read and study their holy scriptures.Music
Thursday Afternoon is a 1985 album by the British ambient musician Brian Eno consisting of one 60-minute-long composition. It is the rearranged soundtrack to a video production of the same title made in 1984.
Donnerstag aus Licht (Thursday from Light) is an opera by Karlheinz Stockhausen.
Thursday is a post-hardcore band from New Brunswick, New Jersey, formed in 1997.
"Thursday's Child" is a David Bowie song from the album hours...(1999).
"Thursday's Child" is a song by The Chameleons on Script of the Bridge (1983).
"Outlook for Thursday" was a hit in New Zealand for Dave Dobbyn.
Thursday (mixtape)" is the name of a mixtape by R&B artist The Weeknd released in 2011.
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