RubanTools

World Clock & Time Zone Converter

Live current time in major cities worldwide. Pick a date/time and instantly see what hour it falls in elsewhere - perfect for scheduling international calls.

Convert a Specific Time
Showing live current time in each city. Pick a date above to convert a specific moment.

Common Conversions from IST

World Clock - Time Zones Explained

A world clock displays the current local time in multiple cities simultaneously, accounting for each region's UTC offset and daylight saving adjustments. India operates on Indian Standard Time (IST), which is UTC+5:30 - one of only two time zones in the world with a 30-minute offset. This single time zone covers all 3.28 million square kilometres of India, making coordination with global partners a daily reality for millions of Indian professionals.

Why Time Zone Awareness Matters in India

With India's IT and BPO sector employing over 5.4 million people and serving clients across North America, Europe, and Asia-Pacific, understanding time zone differences is a core professional skill. IST sits conveniently between East Asian and European business hours, which partly explains why Bengaluru, Hyderabad, and Pune became global tech hubs. Government competitive exams like UPSC and SSC also schedule interviews and result announcements using IST, while SEBI and NSE trade windows are anchored to market open at 9:15 AM IST.

Reading the World Clock

This tool refreshes every second using your browser's JavaScript clock, ensuring accurate display without server round-trips. You can compare IST against New York (EST/EDT, UTC-5/-4), London (GMT/BST, UTC+0/+1), Dubai (GST, UTC+4), Singapore (SGT, UTC+8), and 80 other cities. Use it to schedule calls, plan international deliveries, or simply satisfy curiosity about what time it is on the other side of the world.

Frequently Asked Questions

IST (Indian Standard Time) is UTC+5:30 - 5 hours and 30 minutes ahead of Coordinated Universal Time. India has a single time zone for the entire country. The half-hour offset is unusual globally; most countries use full-hour offsets. India does not observe Daylight Saving Time (DST), so IST remains UTC+5:30 throughout the year.

When it is 12:00 noon IST, the time in the USA varies by zone: New York (EST) = 1:30 AM; Chicago (CST) = 12:30 AM; Los Angeles (PST) = 10:30 PM previous day. During US Daylight Saving Time (mid-March to early November), clocks advance by 1 hour, making each zone 1 hour later than standard time.

UAE (Dubai) is on GST (Gulf Standard Time) UTC+4. India (IST) is UTC+5:30. India is 1 hour 30 minutes ahead of UAE. When it is 10:00 AM in Dubai, it is 11:30 AM in India. UAE does not observe DST, so this difference remains constant throughout the year.

The UK is on GMT (UTC+0) in winter and BST (UTC+1) in summer. India (IST = UTC+5:30) is 5.5 hours ahead in winter and 4.5 hours ahead in summer. A good overlap window is 2:00–4:00 PM IST = 8:30–10:30 AM GMT. Use the time converter on this page to pick a specific date and automatically account for DST.