Udaya

Tamil Nadu calendar The month for a place with the regional date, tithi and nakshatra at sunrise in every cell, the festivals and vratams marked, and the whole year's festivals below.

Tradition
Reckoning

Most printed Tamil calendars are vakya and astronomical ones are thirukanitha; the two can start a month a day apart.

UTC+5:30

Enter a year between 1800 and 2200.

The page opens on this month. Every cell carries the civil date, the regional date of the tradition chosen above — the Tamil solar month and day, Kerala's Malayalam month with the Kollam year, the Telugu and Kannada amanta lunar month, or the North Indian purnimanta one — and the tithi and nakshatra running at sunrise for the place chosen, with the festivals, vratams and monthly observances marked on the days they fall. The whole year's festivals are listed below the grid, and the year can be exported to a phone or desktop calendar. Sunrise is what fixes the day's tithi and nakshatra, and sunset or aparahna what fixes the first day of a solar month, so the place matters: the same day can carry a different tithi in Chennai and in Delhi.

Positions are accurate to a few arc-minutes, enough for signs, stars and padas except within about half a degree of a boundary, which the pages point out. Nothing you enter leaves the browser.

How the calculations work