The Signals are depending on atomic clocks and synchronised with the worldwide method of clocks that guidance Coordinated Universal Time. India's time zone relies about the eighty two.five°E meridian, which passes as a result of Mirzapur. The half-hour offset was decided on to keep the time close to the mean https://indianstandardtime00547.sasugawiki.com/7991933/5_simple_techniques_for_ist_time