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Time Zone Calculator

Convert date and time across global time zones, compare world clock cities, check daylight saving time (DST), and plan international meetings.

Time Zone Calculator Workspace
Client-ready

Time Zone Converter

Convert dates, times, and daylight saving shifts seamlessly across all world time zones.

New York, USA Same Day EDT (DST Active)
--:-- AM UTC-04:00
Monday, September 28, 2026
GMT / UTC: --:-- --
Time Difference:
10 hours behind
Working Hours
Source: Sep 28, 2026, 2:00 PM (Asia/Dhaka • UTC+06:00)
GMT: --
ISO: 2026-09-28T14:00:00+06:00

Interactive 24-Hour Timeline Slider

Drag the slider across the day to simulate international meeting hours instantly.

14:00 (2:00 PM)
12 AM (Midnight) 4 AM 8 AM 12 PM (Noon) 4 PM 8 PM 11 PM

World Cities & International Meeting Planner

Real-time status for global business hubs. Green represents standard working hours (9 AM - 5 PM).

9am - 5pm (Work) 5pm - 10pm (Evening) Off-Hours / Night

Popular Global Time Zone Pairings

How to Use Time Zone Calculator

1 Convert any date and time between all world IANA time zones
2 Interactive World Cities Grid & Meeting Planner with working-hour status
3 Automatic Daylight Saving Time (DST) detection and UTC offsets
4 Day shift badge (+1 Day / -1 Day) and exact hour difference
5 Instant real-time clock synchronization and 12h/24h display toggle
6 Interactive time slider (00:00 to 23:00) for fast global scheduling

Using Time Zone Calculator on UtilityHub is free and requires no sign-up. Enter or upload your data into the fields above, configure any custom preferences, and get your instant result. All file processing adheres to strict privacy standards: uploaded temporary files are automatically deleted after processing and never shared.

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Frequently Asked Questions

How does the Time Zone Calculator account for Daylight Saving Time (DST)?

Our service utilizes the official IANA Time Zone Database (tzdb). It accurately accounts for historical, current, and future DST transition dates worldwide.

Can I plan international meetings across different countries?

Yes! The World Cities & Meeting Planner highlights each city in green for business hours (9 AM - 5 PM), amber for evening, and gray for off-hours/night.

What does the (+1 Day / -1 Day) badge mean?

Because of the International Date Line and hour differences, the target time zone might already be in tomorrow or still in yesterday relative to your local date.

Privacy First Policy

UtilityHub never sells or permanently stores your files or personal inputs. Calculations run locally in your browser, and temporary file jobs are deleted immediately after download or after 1 hour.

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