निम्नलिखित में से किस दिन को प्रतिवर्ष 'बिहार दिवस' के रूप में मनाया जाता है?

On which date is Indian Navy Day celebrated every year in India?

India celebrates National Panchayati Raj Day in the month of April. On which date is it observed every year?

National Panchayati Raj Day is celebrated in India every year on which date?