Pillar article
Mangala Gauri Vrat on the Tuesdays of Shravana
Mangala Gauri vrat is kept on the Tuesdays of the lunar month of Shravana, and Tuesday is Mangalvara, the weekday of Mars. The goddess addressed is Parvati in her auspicious form as Gauri. Married women have traditionally kept the fast for the wellbeing of the husband and the household. The muhurta is the Tuesday itself inside Shravana, judged by local sunrise, not a printed list from another city.

Month, weekday, and sunrise
Shravana is the lunar month associated with Shiva and Parvati. How many Tuesdays fall inside it changes with the year and with whether the panchang is reckoned amanta or purnimanta, so a northern Indian Shravana and a western Indian Shravana can start on different civil dates. The vrat day is each Tuesday whose sunrise falls in that month. India uses Asia/Kolkata, UTC plus 5 hours 30 minutes, with no daylight saving, yet sunrise in Mumbai is not sunrise in Kolkata. Copying a Tuesday heading from a distant city's almanac can land on the wrong civil date when the tithi is close to sunrise. The muhurta rule is local: that city's sunrise, that Tuesday.
What the fast is, and what Mars dosha is
The observance is a vow, often kept across the Shravana Tuesdays for several years and closed with an udyapan in the family's custom. Offerings in the widely shared form use a sixteen-fold honor of Gauri, a lamp, and the vrat katha. Those ritual details belong to the household tradition. They are not the same calculation as Mangal dosha, which is Mars in house 1, 2, 4, 7, 8, or 12 from the lagna, Moon, or Venus. A Tuesday fast does not move Mars. It is a devotional response beside the chart. Unmarried women in some regions keep the same vrat with a prayer for a worthy marriage. The chart reading for that prayer is still the 7th lord and Venus.
Chart timing beside the vow
If the native wants the vrat to sit next to a real marriage question, look at Venus's twenty-year mahadasha, Jupiter's sixteen years in a woman's chart, and the 7th lord's antardasha. Mars's seven years are the period when Tuesday observances and Mangal topics are loudest. D9 shows whether the marriage house can carry a long vow's hope. Jyothish SI casts that kundli with Swiss Ephemeris and Lahiri ayanamsa. It does not publish this year's Shravana Tuesdays as a universal table, because the civil dates depend on the Moon and on the city's sunrise.
Frequently asked questions
On which days is Mangala Gauri kept?
On the Tuesdays that fall in the lunar month of Shravana. The count of those Tuesdays changes by year, and the civil date follows local sunrise.
Does the vrat cancel Mangal dosha?
The vrat is devotion to Gauri on Mars's weekday. Mangal dosha is a house placement of Mars. The fast does not move Mars to another house.
Why can two cities list different dates?
The panchang day is tied to sunrise, and sunrise differs by city even inside Asia/Kolkata. Amanta and purnimanta month names can also shift the Shravana boundary.
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D1, D9, D10, dashas, yogas, and transits, the same calculations referenced in this article.
