Indian time zone Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/science/Indian-time-zone Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article.

　　External Websites Ask the Chatbot a Question Written by Aman Kumar Aman Kumar is an editor at Encyclopaedia Britannica. Aman Kumar Fact-checked by The Editors of Encyclopaedia Britannica Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors. The Editors of Encyclopaedia Britannica Last Updated: Mar 4, 2025 • Article History Table of Contents Table of Contents Ask the Chatbot Indian time zone, time zone in India observing Indian Standard Time (IST)—five and a half hours ahead of Coordinated Universal Time (UTC)—based on the Indian standard meridian (82°30′ E), which passes through Mirzapur, Uttar Pradesh. IST is the sole time zone observed in India across its vast east-west expanse. Using one time zone for the country, which spans more than 1,800 miles (2,900 km) from east to west, ensures standardization between cities that have huge variations in their local solar schedules. This resolves historical timekeeping issues while also creating regional challenges. Calculating Time Based on Standard Meridians Earth’s 360-degree rotation ...(100 of 1675 words)

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