The Alerts are according to atomic clocks and synchronised While using the worldwide method of clocks that help Coordinated Common Time. India's time zone is based to the 82.5°E meridian, which passes by way of Mirzapur. The 50 percent-hour offset was preferred to keep the time close to the indicate https://india-standard-time41760.wikififfi.com/2479781/helping_the_others_realize_the_advantages_of_current_ist_time