In Vedic astrology, the zodiac of 360° is divided into 27 Nakshatras (lunar mansions), each of 13°20'. A person’s Janma Nakshatra is the star occupied by the Moon at birth. The Malayalam calendar lists the based on the Moon's position at sunrise.
| Malayalam Month | Gregorian Date (Start) | Key Nakshatra Events | Festival/Event | | :--- | :--- | :--- | :--- | | | April 14 | Aswini (Start), Bharani (Vishu) | Vishu | | Edavam | May 15 | Karthika, Rohini | Rainy season onset | | Midhunam | June 16 | Makam, Pooram | Dakshinayana begins | | Karkidakam | July 17 | Amavasya (Vavu Bali) | Ramayana Month begins | | Chingam | August 17 | Thiruvonam | Onam | | Kanni | Sept 17 | Atham, Chithira | Navaratri begins | | Thulam | Oct 17 | Swathi, Vishakham | Deepavali | | Vrischikam | Nov 16 | Anizham, Thriketta | Mandalam Season | | Dhanu | Dec 16 | Thiruvathira | Sabarimala Pilgrimage peak | 1987 malayalam calendar with nakshatra