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 Antalaha 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 Antalaha (Indian/Antananarivo) using local sunrise, sunset and astronomical positions.
Other observances and vrats falling in August 2026, with dates computed for Antalaha.
A more detailed account of Onam (Thiruvonam) — its mythology, regional variations, and rituals — is being prepared.