December 1913 corresponds to Margashirsh (मार्गशीर्ष). Margashirsh closes the cultural year with Datta Jayanti on the full moon and the Champa Shashthi at Jejuri for Khandoba. Major observances: Vivah Panchami (Dec 2), Mokshada Ekadashi (Dec 9), Gita Jayanti (Dec 9). Day quality across 31 days: 3 highly auspicious, 1 favourable, 18 mixed. Ekadashi vrats: Dec 9, Dec 23.
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