September 2031 corresponds to Aavani. Aavani is dense with ritual, with Avani Avittam (the sacred-thread Upakarma renewal), Krishna Jayanti, and Vinayaka Chaturthi all falling here, making it the busiest observance month for many households. Major observances: Hartalika Teej (Sep 19), Ganesh Chaturthi (Sep 20), Balarama Jayanti (Sep 22). Day quality across 30 days: 1 highly auspicious, 8 favourable, 13 mixed. Ekadashi vrats: Sep 12, Sep 27.
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