when does mayor take office

Direct answer: The exact time a mayor takes office depends on local law or charter. Commonly, many cities begin a mayor’s term at 12:00 or 6:00 PM on a specified date (often the second Tuesday in December after election results are certified), but exact times vary by city and country. To give a precise answer, please specify the city or jurisdiction you have in mind (for example, which city or country’s mayor you’re asking about), and I can provide the exact oath/ swearing-in time and when the term officially begins for that specific municipality.