Upanayana (Janeu) Muhurat: The Season, the Tithis and the Anadhyaya Days

The upanayana (उपनयन) — the sacred-thread ceremony, janeu in everyday Hindi — begins a child's study of the sacred texts. Its muhurat is one of the most tightly ruled in the books: a season, a short list of tithis, the hours of the day and a few days of the year on which study is never begun.

This guide sets out the rules with their sources — the season, the tithis, the anadhyaya days of 2027, the weekday, nakshatra and hours — and what a public list cannot check for your child.

The dates themselves are on the year page: Upanayana Muhurat 2027 gives every date of 2027 for New Delhi in both views, with its windows, nakshatra and tithi — 24 days in the calendar view (4 in February, 4 in March, 5 in April, 3 in May, 7 in June and 1 in July) and 22 in the strict view (4 in February, 4 in March, 4 in April, 3 in May and 7 in June).

The Rules at a Glance

• The season: Uttarayana only, outside Chaturmas, and never while Venus or Jupiter is combust — in 2027 from 14 January (21:10 IST) to mid-July, so November and December 2026 have no date.
• The tithis: Dwitiya, Tritiya, Panchami, Dashami, Ekadashi or Dwadashi of the bright half; Dwitiya, Tritiya or Panchami of the dark half; never an anadhyaya day.
• The weekday: never a Tuesday or a Saturday.
• The hours: the first two thirds of the daytime, never the night (the strict view: only before Aparahna).
• The star's varjyam and a kshaya tithi: never.

Neither view checks the lagna. The times are for New Delhi in IST, computed with the Swiss Ephemeris and the Lahiri ayanamsa; other cities differ by minutes.

The Child's Age: by Family Custom

The texts give the age for upanayana by varna, counted from conception: the 8th year for a Brahmin, the 11th for a Kshatriya and the 12th for a Vaishya; an earlier rite, in the 5th, 6th or 8th year, is described for particular aims; and the latest age is the 16th, 22nd or 24th year. (Manusmriti 2.36–2.38) We do not ask your community; your family's tradition decides the age.

A public list is for any child, so every date on it is for any age — choose one in your family's year. The personal muhurat at the end of this page takes the year your family names (any year from the 5th to the 24th by default) and counts it from the birth date in the child's kundli (a family that counts from conception chooses one year earlier).

The Season: Uttarayana, Outside Chaturmas

• Uttarayana only. Muhurta Chintamani's Samskara prakarana has the upanayana done in the Sun's northern course, the Sun in Makara, Kumbha, Meena, Mesha, Vrishabha or Mithuna, and published calendars apply the same. In 2027 that is 14 January (21:10 IST) to 17 July (05:48 IST).
• Not in Chaturmas (Hari-shayana), from Ashadha Shukla Ekadashi in mid-July to Kartika Shukla Ekadashi in November 2027.
• Not while Venus or Jupiter is combust. Muhurta Chintamani names the upanayana among the acts kept away from combustion; Venus is combust from 6 July to 17 September 2027.
• Not in an adhika month (there is none in 2027), nor on the day of a sankranti or an eclipse — Garga's rule, quoted in the same chapter, and the anadhyaya list names the sankranti too. In 2027 the solar eclipse of 6 February closes that day.

Kharmas is not closed. The March–April Kharmas, the Sun in Meena (15 March to 14 April 2027), lies inside Uttarayana, and neither the book nor published calendars close it for an upanayana, so its dates stay on the lists. Many families wait for it to end all the same — a custom. The Kharmas 2026–27 guide explains both months.

The strict view adds the books' rules that many calendars leave out, above all Simhastha Guru: Jupiter in Leo closes an upanayana in every region from 26 June 2027, which takes out 5 July; and its earlier end of the day, at Aparahna, takes out 15 April, whose one window lies past it. The Simhastha Guru guide explains the rule.

Tithis and the Anadhyaya Days

The tithi rule is short. Muhurta Chintamani, with published calendars:

• Bright half: Dwitiya, Tritiya, Panchami, Dashami, Ekadashi or Dwadashi.
• Dark half: Dwitiya, Tritiya or Panchami only — the first part of the fortnight.
• Narada, quoted in Muhurta Chintamani, rates Shukla Shashthi middling; the commentary rejects it, and the lists leave it out.

On top of that come the anadhyaya days, days on which Vedic study is not begun. Four are named for the upanayana by month and tithi, and in 2027 they fall here (a tithi often touches two civil days, and both are closed where it does):

The other no-study days — Pratipada, Ashtami, every Chaturdashi, Purnima, Amavasya — are outside the tithi list anyway, and so are the galagraha tithis the book also avoids. A pradosha day, which the book also leaves out, is not computed by these lists.

Weekday, Nakshatra and the Hours

• Weekday: never Tuesday or Saturday (Muhurta Chintamani; published calendars apply it too). Sunday, Monday, Wednesday, Thursday and Friday are all allowed.
• Nakshatra: best in the swift, fixed, movable and soft stars — Ashwini, Pushya, Hasta, Rohini, the three Uttaras, Punarvasu, Swati, Shravana, Dhanishtha, Shatabhisha, Mrigashira, Chitra, Anuradha and Revati — and also in Ashlesha, Mula, Ardra and the three Purvas.
• The hours: Manu, quoted in Muhurta Chintamani, calls the forenoon best, midday middling and the afternoon condemned. The calendar view keeps the first two thirds of the daytime, as published calendars cut it; the strict view ends at Aparahna, three fifths of it; neither keeps the night.
• Never a kshaya tithi, one current at no sunrise at the place: a present-day almanac printed no samskara day in one on the days compared (Muhurta Chintamani bars it for a karnavedha).
• Never the star's varjyam — its tyajya ghatis, the four of the star's sixty parts that follow the count the book gives for it, in proportion to the star's own length (Muhurta Chintamani, Vivaha prakarana: avoided in every auspicious act; the Jyotih-sagara, quoted in its commentary, names the upanayana among the rites it spoils).
• The rest of the panchang: no Bhadra, no Vyatipata or Vaidhriti yoga, no gandanta, and Rahu Kalam, Yamaganda and Gulika cut out of every window.

Checked Against a Published Almanac

The calendar view was compared day for day with a widely used almanac's daily upanayana tool for the fortnight from 14 January 2027 at New Delhi, Mumbai and Kolkata and 16 to 22 November 2026 and 4 chosen days from February to June 2027 at the same cities, 72 day pages in all: it published 10 days, on four dates, and the calendar view keeps all 10 and adds none. Its hours end at two thirds of the daytime, where that almanac's cards end, and the varjyam is cut where that almanac hides it. Elsewhere a rule is applied more strictly here: Rahu Kalam, Yamaganda and Gulika; the first five ghatis of Vishkambha yoga, where that almanac takes three of the yoga's sixty parts; and on 8 April 2027 the first part of Ashwini's varjyam, which Muhurta Chintamani starts a little before that almanac does. That almanac names the lagna's faults on its upanayana cards without dropping a day for them, and these lists drop none either. It keeps no year list for an upanayana, so the comparison is a sample.

Reading a Date on the Year Page

Each date on the Upanayana Muhurat 2027 page comes with its windows, nakshatra and tithi, and a strength word — "Very good", "Good" or "Usable". The word is a rough order from classical factors such as the star, the weekday and the bright half — not a probability. Every window already leaves out Rahu Kalam, Yamaganda and Gulika, Bhadra and the inauspicious yogas, and keeps at least one ghati (24 minutes) of clean time. Between two dates that suit the family equally, Manu's order of the hours — the forenoon best, midday middling — favours the one whose window comes earlier.

What a Public List Cannot Check

• The child's year, as above.
• The lagna. Muhurta Chintamani asks that the rising sign be not the 8th from the child's birth sign or lagna, that Jupiter, Venus and the Moon be free of the Sun, Mars and Saturn, and that the malefics stay out of the 1st, 5th and 8th houses. Neither view here computes it.
• The child's Tribala. Jupiter, the Sun and the Moon counted from the child's birth Moon sign — Jupiter by Muhurta Chintamani's houses, with its exceptions; the Sun and the Moon not in the 4th, 8th or 12th, as published calendars apply them.
• A family event. Muhurta Chintamani's Vivaha prakarana names a daughter's wedding after a son's, and a mundan after a wedding; waiting six months after a wedding, an upanayana or a mundan in the family before an upanayana is a conservative reading of the commentaries and of custom.

The personal upanayana muhurat at the end of this page asks for the child's kundli and the city, keeps only the dates in your family's year, and checks the lagna and the child's Tribala.

Planning an Upanayana

• The season is short: Uttarayana from mid-January to mid-July, less the combustion of Venus or Jupiter. If your family waits out the March–April Kharmas (15 March to 14 April 2027), take a date before or after it from the year page.
• Your own city: the free muhurat finder lists the upanayana days in both views for up to three months.
• Any single day: today's panchang gives the tithi and nakshatra at sunrise, and the choghadiya the day's windows.
• The other samskaras of childhood: the Namkaran Muhurat 2027 and Annaprashan Muhurat 2027 pages, with their guides.
• If two lists disagree, Why muhurat dates differ gives the usual reasons.