The Alerts are depending on atomic clocks and synchronised Using the worldwide method of clocks that assistance Coordinated Common Time. India's time zone is based around the eighty two.5°E meridian, which passes by way of Mirzapur. The half-hour offset was chosen to maintain the time near the mean solar time https://live-ist-time20985.ampedpages.com/5-easy-facts-about-time-calculator-described-69058411