What is the Vrat & Tithi Calendar?
The Vrat & Tithi calendar is the Hindu fasting and festival calendar — the month-by-month list of sacred observance days, each falling on a specific lunar tithi. Because Hindu vrats follow the Moon, not the Western date, their days shift each month and must be computed from the actual tithi at sunrise. The most observed are the Ekadashi (the eleventh tithi, a fasting day for Vishnu that comes twice a month), the Pradosh Vrat (thirteenth tithi, sacred to Shiva), the Purnima (full moon) and Amavasya (new moon), and the Sankranti (the Sun’s entry into a new sign). Alongside these come the great festivals, each tied to its own tithi. Keeping this calendar helps devotees observe fasts, perform puja and mark auspicious days correctly. This free calculator lists the month’s Vrat and Parva days — Ekadashi, Pradosh, Purnima, Amavasya, Sankranti and more — computed from the true tithi at sunrise, instantly and at no cost.
How It Works
Choose the month and place
Pick the month and your location for accurate tithi-at-sunrise dates.
We compute the tithis
We find each observance from the real tithi at sunrise that day.
Read your vrat calendar
See the month’s Ekadashi, Pradosh, Purnima, Amavasya and more.
What You Get
Ekadashi Dates
The twice-monthly fasting days.
Pradosh Vrat
The Shiva fasting days.
Purnima & Amavasya
Full-moon and new-moon days.
Sankranti
The Sun’s entry into a new sign.
Festival Days
Major parvas of the month.
Any Month
This month or any you choose.
Why the Hindu Calendar Follows the Moon
The Western calendar is solar and fixed, but the Hindu calendar of fasts and festivals is fundamentally lunar — and that is why its sacred days seem to "move" each year. Every vrat and parva is tied to a tithi, a lunar day defined by the angle between the Sun and the Moon, and the day of observance is decided by which tithi is present at sunrise. This is why the same Ekadashi can fall on different Western dates in different places, and why a proper calendar must be computed rather than simply looked up. Following the Moon in this way keeps the observances aligned with the natural rhythm the tradition holds sacred — the waxing and waning that governs the Ekadashi fasts, the Pradosh worship, and the great full-moon and new-moon days around which so much of Hindu devotional life turns.
The Key Monthly Observances
Ekadashi
11th tithi — Vishnu fast, twice a month.
Pradosh Vrat
13th tithi — Shiva evening worship.
Purnima / Amavasya
Full moon and new moon days.
Sankranti
The Sun’s entry into a new sign.
How the Dates Are Computed
Tithi at sunrise
The tithi present at sunrise fixes the day.
Location matters
Sunrise differs by place, so dates can shift.
Lunar, not solar
Days follow the Moon, not the Western date.
Festivals follow tithis
Each parva sits on its own tithi.
Using the Vrat Calendar in Daily Life
A vrat calendar is a practical companion for devotional life. At the start of each month, glance through it to note the Ekadashi and Pradosh days if you keep those fasts, and mark the Purnima and Amavasya for puja and remembrance. Because the dates are computed from the tithi at sunrise for your location, they are accurate to where you actually are — important when observances hinge on the exact day. Planning ahead lets you prepare for fasts, arrange pujas and observe festivals at their proper time, rather than being caught out by the shifting lunar dates. Paired with the daily panchang and the shubh muhurat windows, the vrat calendar completes a full picture of sacred time — from the rhythm of the month’s observances down to the auspicious hours of a single day.
Inside Your 40+ Page Report
- The month’s Ekadashi fasting days
- The Pradosh Vrat days
- The Purnima (full moon) day
- The Amavasya (new moon) day
- The Sankranti (Sun’s sign change)
- Major festival and parva days
- Each computed from the tithi at sunrise
- A complete free vrat & tithi calendar for any month
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Real tithi at sunrise
We compute each vrat from the actual tithi at sunrise — the correct traditional method.
All key observances
Ekadashi, Pradosh, Purnima, Amavasya, Sankranti and festivals in one place.
Authentic Lahiri ayanamsa
Computed with the Lahiri ayanamsa, the Indian standard, matching the traditional panchang.
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