The Signals are according to atomic clocks and synchronised Using the worldwide procedure of clocks that support Coordinated Common Time. India's time zone is based on the 82.5°E meridian, which passes by way of Mirzapur. The half-hour offset was selected to maintain the time near the indicate solar time across https://current-time-in-india02196.shopping-wiki.com/10104299/detailed_notes_on_utc_to_ist