Understanding Time Zone Differences

Time zone differences are crucial for international business, remote team coordination, and travel planning. This calculator shows the current offset between two time zones, accounting for Daylight Saving Time where applicable.

How to Use This Calculator

Select your first time zone from the dropdown menu
Select your second time zone from the dropdown menu
Click "Calculate Difference" to see the current hour difference
Use the quick converter to translate hours between different units

Common Time Zone Differences

From	To	Standard Difference	DST Difference
New York	London	-5 hours	-4 hours
Tokyo	Los Angeles	+17 hours	+16 hours
Sydney	Dubai	+6 hours	+7 hours

Important Notes

Daylight Saving Time (DST) changes occur at different dates in different countries
Some regions don't observe DST at all
The International Date Line can create calendar day differences
Some time zones have 30 or 45 minute offsets

Frequently Asked Questions

Why does the time difference change throughout the year?

Daylight Saving Time causes time differences to shift by one hour in many regions. Different countries change their clocks on different dates.

What about time zones with 30 or 45 minute offsets?

This calculator shows fractional differences for time zones with partial hour offsets (e.g., India Standard Time is UTC+5:30).

How accurate is this calculator?

It uses your browser's time zone database which is regularly updated, but for critical applications, always double-check with official sources.

Timezone Difference Calculator

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