World Clock & Timezone Meeting Planner

Coordinate remote team meetings and find fair overlapping working hours across international time zones with interactive sliders and live global clocks.

Live Global Clocks
Mon, 28 Sep 2026 11:12:01 GMT
Mumbai / New Delhi (IST)
04:42:01 PM
Mon, Sep 28
New York (EDT/EST)
07:12:01 AM
Mon, Sep 28
London (BST/GMT)
12:12:01 PM
Mon, Sep 28
Tokyo (JST)
08:12:01 PM
Mon, Sep 28
Timezone Meeting Overlap Planner
15:00
City / TimezoneSelected TimeWork Hours Status (9 AM - 6 PM)Action
Mumbai / New Delhi (IST)3:00 PMBusiness Hours
New York (EDT/EST)5:30 AMOutside Work Hours
London (BST/GMT)10:30 AMBusiness Hours
Tokyo (JST)6:30 PMOutside Work Hours

Mastering Cross-Timezone Collaboration in the Remote Work Era

With the exponential growth of distributed remote teams, asynchronous communication, and offshore development centers, scheduling meetings across international borders has become a daily requirement for engineering managers, product leads, and business executives. However, coordinating across multiple timezones introduces subtle logistical challenges: unintentional late-night calls, early morning burnout, and confusing daylight saving shifts that disrupt synchronous collaboration.

The Earth is divided longitudinally into 24 primary time zones, each theoretically spanning 15 degrees of longitude (representing one hour of the Earth's 360-degree daily rotation). However, geopolitical boundaries, economic partnerships, and historical decisions have resulted in over 400 localized time zones cataloged in the authoritative IANA Time Zone Database, including fractional 30-minute offsets (such as India Standard Time at UTC+5:30) and 45-minute offsets (such as Nepal at UTC+5:45).

The 3 Golden Rules for Respectful Global Team Scheduling

1. Rotate the Pain

If an overlap cannot be found without someone attending outside normal business hours, rotate meeting times every two weeks so the burden of late calls does not fall perpetually on the same team.

2. Prioritize Asynchronous Updates

Reserve real-time synchronous meetings exclusively for strategic alignment, high-stakes brainstorming, or complex retrospectives. Use written docs and Loom videos for routine status updates.

3. Double-Check DST Transitions

Be vigilant during March and October/November when North America and Europe shift clocks on different weekends while Asian hubs remain constant. Always use an interactive tool to confirm offsets.

Major Global Tech & Financial Centers Offset Reference Table

Quickly reference standard time offsets, common abbreviations, and Daylight Saving Time policies for major world commerce hubs:

City / Financial HubStandard OffsetCommon AcronymDaylight Saving Time (DST)?Overlap With San Francisco (PT)
San Francisco / SeattleUTC-08:00 (PST) / UTC-07:00 (PDT)PST / PDTYes (March – November)Base Reference (0 hrs)
New York / BostonUTC-05:00 (EST) / UTC-04:00 (EDT)EST / EDTYes (March – November)+3 Hours Ahead
London / DublinUTC+00:00 (GMT) / UTC+01:00 (BST)GMT / BSTYes (March – October)+8 Hours Ahead
Berlin / Paris / AmsterdamUTC+01:00 (CET) / UTC+02:00 (CEST)CET / CESTYes (March – October)+9 Hours Ahead
Mumbai / Bengaluru / New DelhiUTC+05:30 (Constant)ISTNo (Constant year-round)+12.5 to 13.5 Hours Ahead
Singapore / Hong KongUTC+08:00 (Constant)SGT / HKTNo (Constant year-round)+15 to 16 Hours Ahead
Tokyo (Japan)UTC+09:00 (Constant)JSTNo (Constant year-round)+16 to 17 Hours Ahead
Sydney / MelbourneUTC+10:00 (AEST) / UTC+11:00 (AEDT)AEST / AEDTYes (Southern Hemisphere Oct – Apr)+17 to 19 Hours Ahead

Frequently Asked Questions

The World Clock Meeting Planner utilizes the international IANA (Internet Assigned Numbers Authority) Time Zone Database built into standard modern browser ECMAScript Internationalization APIs (Intl.DateTimeFormat). It calculates exact offsets between cities taking into account geographical longitudes, standard time offsets, and daylight saving time (DST) shifts in real time.

Standard corporate business hours are generally defined between 09:00 AM (09:00) and 06:00 PM (18:00) in each participant's local timezone. Our tool visually tags meeting time slots with green 'Business Hours' badges when the proposed time falls within this window, and gray 'Outside Work Hours' badges when the slot requires someone to attend during their evening, night, or early morning.

Due to the 9.5 to 10.5 hour time difference between US Eastern Time (ET) and Indian Standard Time (IST), the ideal collaborative overlap occurs between 08:00 AM - 10:30 AM EDT, which corresponds to 05:30 PM - 08:00 PM IST. This window allows US team members to start their morning workday while Indian colleagues finish their evening shifts.

Daylight Saving Time (DST) is the practice of setting clocks forward by one hour in spring and back one hour in autumn to make better use of natural daylight during summer evenings. Countries in North America and Europe transition into and out of DST on different dates in March and October/November, while countries like India, Japan, and Singapore never observe DST. This asymmetry alters time differences by an hour twice a year, causing widespread calendar mix-ups.

GMT (Greenwich Mean Time) is an astronomical time standard based on the Prime Meridian passing through Greenwich, London. UTC (Coordinated Universal Time) is the modern, atomic clock-based successor to GMT that forms the reference benchmark for civil time worldwide. Local time zones (such as EST, PST, CET, or IST) are defined as positive or negative offsets from UTC (for example, UTC+05:30 for Indian Standard Time, or UTC-05:00 for US Eastern Standard Time).

Yes! Click the 'Copy Meeting Schedule' button, and our tool compiles an organized, text-formatted breakdown of the proposed meeting hour across all of your selected cities, ready to paste straight into Google Calendar descriptions, Microsoft Outlook invites, or Slack channels.

You can add as many major world cities as you need. Whether you are coordinating a 3-person remote team or an all-hands cross-functional meeting spanning North America, Europe, the Middle East, Asia, and Australia, the planner updates all time columns simultaneously.

No. India maintains a uniform, constant time offset of UTC+05:30 across the entire country throughout the entire calendar year without any daylight saving adjustments.

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