September 9 – Yenya, the biggest festival of Kathmandu Valley dedicated to god of rain Indra, formally will commence tomorrow with the erection of a sacred wooden pole (Yasin) at Hanumandhoka in Basantapur Darbar Square at auspicious time of 9:17 am. For the preparation of erection of Yasin, members of Chasando Sayami Khalaa has arranged the rope at the Yasin today, locally termed as Walaa Ghakegu.
The festival lasts for eight days with singing, mask dancing and rejoicing along with other rituals.
Legends said that the Indra Jatra festival is observed to celebrate the victory of the gods over the demons to release Jayanta, the son of Lord Indra.
Indra, the god of rain, is worshiped in this festival primarily celebrated by the Newar communities following both Hinduism and Buddhism.