⚠ Critical Limitations — Read Before Acting
A Muhurat computed without reference to the native's personal birth chart is, by classical definition, incomplete. Muhurta Chintamani (Rama Daivagnya, c. 1600 CE) and Brihat Parashara Hora Shastra both insist that the event chart must be reconciled with the native's Janma Nakshatra, Janma Rashi, and active Dasha lord before any Muhurat is confirmed. This tool provides a strong general Muhurat window — it does not substitute for a personalised reading.
Tara Bala failure — if the event Nakshatra falls in the Vipat (3rd), Pratyak (5th), or Naidhana (7th) position counted from the native's Janma Nakshatra, the Muhurat is personally inauspicious regardless of general strength. Always verify Tara Bala for the native.
Graha Yuddha (planetary war) — when two visible planets occupy the same degree, the defeated planet (lower declination) loses its benefic power entirely. A Muhurat ruled by or dependent on a planet in Graha Yuddha is weakened for that planet's significations.
Gandanta zones — the last 48 minutes of Ashlesha, Jyeshtha, and Revati (water-sign endings) and the first 48 minutes of Magha, Moola, and Ashwini (fire-sign beginnings) are Gandanta. Beginning any major event in these junctions is avoided in all classical texts including Sarvartha Chintamani and Muhurta Martanda.
Sade Sati and Ashtama Shani — a native currently under Shani's Sade Sati (7.5-year transit over Janma Rashi and adjacent signs) or Ashtama Shani (Saturn transiting the 8th from Moon) faces an underlying karmic weight that even a strong Muhurat cannot fully neutralise. The Muhurat helps; it does not override Dasha and transit afflictions.
Combust benefics — when Jupiter or Venus is within 11° of the Sun (Venus) or 11° of the Sun (Jupiter by some reckonings), they are considered combust and lose their capacity to bless the Muhurat Lagna. Marriage and business Muhurats in particular require visible, unafflicted Venus and Jupiter.
Chandra Bala — if the Moon at the time of the Muhurat is placed in the 6th, 8th, or 12th house from the native's natal Moon (Janma Rashi), Chandra Bala is absent and the Muhurat's strength is significantly diminished for that individual.
Use this tool to identify candidate windows, then verify the above conditions against your personal chart — or consult a trained Jyotishi for events of major life consequence.
How Muhurat Is Calculated
This tool computes sunrise and sunset for each day in your range at the given latitude/longitude/timezone. Each day is split into 8 equal daytime segments. Rahu Kaal (one fixed segment per day, position varies by weekday) is identified and excluded if the option is on. For every remaining segment, the Panchang is evaluated at the midpoint: Tithi (lunar day), Nakshatra (lunar mansion), and Yoga (nitya yoga from Sun+Moon longitude sum). Your optional filters are then applied — only segments matching your allowed Tithis, Nakshatras, and Yogas are returned. Not computed by this tool: Durmuhurta, Gulika Kaal, Yamagandam, Abhijit Muhurta, Choghadiya, Tara Bala, Graha Yuddha, combustion checks, or any personal chart factors.
Purpose-Specific Rules
Vivah Muhurat — Marriage
Marriage Muhurat is the most complex and strictly observed in Vedic tradition. The five auspicious months (Magha, Phalguna, Vaishakha, Jyeshtha, and Margashirsha) are traditionally preferred. Venus must be visible and not combust. When Venus sets close to the Sun, Vivah Muhurats are avoided for months. Jupiter must also be strong and unafflicted. Best Nakshatras for marriage are Rohini, Mrigashira, Magha, Uttara Phalguni, Hasta, Swati, Anuradha, Mula, Uttarashada, Uttara Bhadrapada, and Revati. Avoid Bharani, Krittika, Ardra, Ashlesha, Jyeshtha, Moola, Purvashadha, Dhanistha, Shatabhisha. The Lagna of the Muhurat chart should be a fixed sign (Taurus, Leo, Scorpio, Aquarius) for stability in marriage.
Griha Pravesh — Housewarming
Entering a new home is considered a major life event that sets the energetic foundation of the household. The Moon should be in a fixed sign for stability. Jupiter or Venus should aspect the Lagna of the Muhurat. Uttara Phalguni, Uttarashada, Uttara Bhadrapada, Rohini, Mrigashira, Anuradha, and Hasta are the best Nakshatras. The bright fortnight (Shukla Paksha) is strongly preferred. Saturday and Sunday are generally avoided. The entry should ideally occur in the morning hours when the Lagna is well-aspected. The owner should enter with the right foot first, carrying auspicious items including rice, a lamp, and a copper vessel of water.
Vyapar Arambha — Business Start
For launching a business or signing major commercial agreements, Mercury must be strong and direct. Mercury retrograde is especially avoided for business starts. Wednesday (Mercury's day) is the most naturally favourable, followed by Thursday (Jupiter). Pushya Nakshatra is the single most auspicious Nakshatra for business beginnings in the entire 27-Nakshatra cycle — so much so that Pushya on a Thursday is called Guru-Pushya Yoga and is considered exceptionally powerful for starting ventures and purchasing items for the business. The Lagna should ideally have the 2nd and 11th lords (wealth lords) well placed. Avoid the 8th and 12th houses of the Muhurat chart being occupied by malefics.
Yatra — Travel
Travel Muhurat is governed by the direction of journey, the day of the week, and the Nakshatra. Each direction has a favourable and unfavourable day: East is favourable on Sunday and Thursday; South on Tuesday and Saturday; West on Wednesday and Friday; North on Monday. The Moon's Nakshatra should be favourable for the specific direction. Avoid travel during the last quarter of Ashlesha, full Magha, and first quarter of Moola (Gandanta zones — dangerous junctions between water and fire signs). Avoid beginning travel during Rahu Kaal. For long-distance or overseas travel, check that the 3rd and 9th houses of the Muhurat chart are unafflicted.
Namakaran — Naming Ceremony
The naming ceremony is traditionally performed on the 11th or 12th day after birth (Ekadasha or Dwadasaha). The Moon's position on the ceremony day is most important — it should be in a benefic Nakshatra, ideally one compatible with the child's Janma Nakshatra. The name itself is traditionally derived from the syllable of the Nakshatra pada the child was born in. Avoid Ashtami, Navami, Chaturdashi, and Amavasya for the ceremony. The ceremony is performed in the morning in most regional traditions, with the father whispering the name in the child's right ear during the ritual.
Vidyarambha — Education Start
Beginning formal education, enrolling in a new course, or starting to learn a skill is governed by Vidyarambha Muhurat. The 5th house rules intelligence and education, so the Lagna of the Muhurat should ideally have the 5th lord well placed. Saraswati Puja days — especially Vijayadashami (Dussehra) and Vasant Panchami — are considered the most auspicious in the Hindu calendar for beginning education. Hasta, Ashwini, Pushya, Punarvasu, Mrigashira, and Uttara Phalguni are the best Nakshatras. Wednesday (Mercury's day) is the most naturally favourable. Mercury should be direct, strong, and unafflicted in the Muhurat chart.
What the Results Show — Reading Your Muhurat Windows
Results are ranked from best to least auspicious based on a composite score. Each window shows the date, start time, and end time in your local timezone. The quality rating reflects how many positive factors are simultaneously present — Tithi grade, Nakshatra suitability for your purpose, absence of all inauspicious Kaals, benefic planetary aspects on the Lagna, and Vara compatibility. A top-ranked window satisfies all criteria simultaneously. Even a medium-ranked window is far better than a randomly chosen moment. Use the highest-ranked window that fits your practical schedule. If the top window is in the middle of the night, the second or third is perfectly acceptable — the ranking difference is astronomical precision, not practical significance.
Sources
Muhurta Chintamani
by Rama Daivagnya (c. 17th century). The primary classical text on Muhurta. Covers the selection criteria for Vivah, Griha Pravesh, Vyapar Arambha, Yatra, and all major Samskaras. Specifies Nakshatra and Tithi suitability lists for each purpose and defines inauspicious periods to avoid.
Brihat Samhita
by Varahamihira (c. 550 CE). Covers auspicious Nakshatras for marriage and travel, Rahu Kaal calculation, and the general principles of electional timing that form the basis of Muhurta practice.
Dharmasindhu
by Kashinatha Upadhyaya (1790 CE). Detailed rules for Griha Pravesh, Namakaran, and Upanayana Muhurats. Widely used in North Indian Muhurta practice alongside Muhurta Chintamani.
Nirnaya Sindhu
by Kamalakara Bhatta (1612 CE). Authoritative source for festival timing and Samskara Muhurats. Defines the forbidden Tithis and Nakshatras for marriage (Vivah Muhurta) that are standard in modern practice.