What is Raksha Bandhan?
Raksha Bandhan is the tying of the rakhi — a sister binds a thread on her brother’s wrist and he undertakes to protect her. It falls on the full moon of Shravana.
How it is observed
The thread should be tied during Aparahna, the afternoon window, and never during Bhadra, which is why the auspicious hours below matter more than the calendar date. Sweets and a gift follow the tying.