Vishu Date: Calendar, Astronomy, and Meaning

Vishu is celebrated on the first day of the Malayalam month of Medam (also spelled Meda), which typically falls on April 14 or 15 in the Gregorian calendar every year.

Astronomical and Calendar Basis

Vishu marks the solar transition (Sankranti) when the Sun enters the zodiac sign of Mesha Rashi (Aries) according to the traditional Indian solar calendar. This is known as Medam Sankranti or Mesha Sankranti.

• The Malayalam calendar is a solar sidereal calendar used in Kerala.
• Medam is the first month in the solar reckoning used in the Malabar region of Kerala.
• Due to the Earth's orbit and the slight mismatch between the tropical (Gregorian) and sidereal calendars, the exact Gregorian date alternates between April 14 and 15.

For 2026 (as of the current time in May 2026): Vishu was celebrated on Wednesday, April 15, 2026.

The Sankranti moment (exact Sun's entry into Aries) occurred on April 14 around 9:39 AM (IST), but the festival observance and Vishu Kani viewing happened on April 15 in Kerala.

This variation occurs because the festival is tied to the precise astronomical moment, but the practical celebration aligns with the full day in the local calendar.

Historical and Etymological Context

The term Vishu derives from Sanskrit Visuvam, meaning "equal," originally linked to the vernal equinox (when day and night are equal). Due to the precession of the equinoxes, the actual astronomical equinox now falls around March 21, but Vishu remains fixed to the Medam 1 solar position.

It has been observed for centuries as the traditional Malayali New Year (especially in Malabar), even though the official Kollam Varsham (Malayalam era) New Year begins on the 1st of Chingam (around August 16-17). Vishu is more of an astrological and agricultural New Year, coinciding with the start of the harvest season and the Sun's northward journey.

Comparison with Other Festivals

Vishu falls around the same time as several other Indian solar New Year festivals:

• Tamil Puthandu (Tamil Nadu)
• Ugadi (Andhra/Telangana/Karnataka, though slightly variable)
• Pohela Boishakh (Bengal)
• Baisakhi (Punjab)
• Bihu (Assam)

All celebrate the Sun's entry into Aries, a symbol of renewal.

Observance Across Regions and Years

• In Kerala: Public holiday in many places; families perform rituals at home and visit temples.
• Globally: Malayali diaspora celebrates it on the same date, adjusting for local time zones.
• It is not a fixed Gregorian date like Christmas but drifts slightly due to the solar calendar's alignment with seasons.

Recent and Upcoming Dates (approximate, based on reliable sources):

• 2024: April 14 (Sunday)
• 2025: April 14 (Monday)
• 2026: April 15 (Wednesday)
• 2027: Around April 14-15 (varies by source, often April 14 or 15)
• 2028: April 14

The date is determined by panchang (Hindu almanac) calculations for the exact Sankranti moment. In practice, if Sankranti falls before sunrise on a day, Vishu is observed that day; otherwise, the next.

Vishu is a time of hope, prosperity, and fresh beginnings, perfectly timed with blooming Kani Konna flowers and the agricultural cycle in Kerala. The focus is not just on the calendar date but on starting the year with auspicious sights, prayers, and family togetherness. If you are planning for a future year, checking a reliable Malayalam panchang or sites like DrikPanchang/ProKerala is best for the precise local timing.