Onam 2025 Malayalam Calendar Thiruvonam. Onam is also known as the state's harvest festival and is celebrated at the beginning of the first month of the malayalam calendar (kolla varsham) known as. First onam is on september 14, saturday, thiruvonam 2024 will be celebrated on september 15, sunday.

Onam is a 10 day keralite festival. Malayalam calendar showing all kerala festivals, government holidays in kerala and major events in the year 2023.