Observed on the Sravana day within the solar month of Leo.
The festival is observed during the window when this nakshatra is active. Times are in Posht-e Pian local clock.
Onam (Thiruvonam) is one of the festivals observed in the Hindu calendar. A detailed account of its mythology, significance, and rituals is being prepared.
Computed for Posht-e Pian (Asia/Tehran) using local sunrise, sunset and astronomical positions.
Other observances and vrats falling in August 2026, with dates computed for Posht-e Pian.
A more detailed account of Onam (Thiruvonam) — its mythology, regional variations, and rituals — is being prepared.