Timezone Converter

Convert times across world timezones with DST handling

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Meeting Time Planner

Find the best time for a meeting across all your selected timezones

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What is UTC?

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks and time. It's not affected by daylight saving time and serves as the reference point for all timezones.

Example: If it's 12:00 PM UTC, it's 7:00 AM EST (UTC-5) and 9:00 PM JST (UTC+9).

Understanding Daylight Saving Time (DST)

Daylight Saving Time is the practice of advancing clocks during warmer months so that darkness falls at a later clock time. This tool automatically handles DST transitions.

Common DST Changes:

  • Spring Forward: Clocks move ahead 1 hour (lose an hour)
  • Fall Back: Clocks move back 1 hour (gain an hour)

Not all regions observe DST, and those that do may change on different dates.

Why Use IANA Timezone Names?

IANA timezone names (like "America/New_York") are more precise than abbreviations (like "EST") because:

  • Abbreviations can be ambiguous (CST = Central, China, or Cuba Standard Time)
  • IANA names include historical timezone rules and DST changes
  • They're maintained and updated by the Internet Assigned Numbers Authority
Meeting Time Planner Tips

When scheduling meetings across timezones:

  • Consider working hours: 9 AM - 5 PM is standard in most regions
  • Rotate inconvenient times: Share the burden of early/late meetings
  • Check DST transitions: Recurring meetings may shift when zones change
  • Use 24-hour format: Prevents AM/PM confusion
  • Confirm timezone: Always specify the timezone explicitly
Common Timezone Offsets

Popular timezone offsets from UTC:

  • UTC-8/-7: Pacific Time (PST/PDT)
  • UTC-5/-4: Eastern Time (EST/EDT)
  • UTC+0/+1: London (GMT/BST)
  • UTC+1/+2: Central Europe (CET/CEST)
  • UTC+5:30: India (IST - no DST)
  • UTC+8: China, Singapore (no DST)
  • UTC+9: Japan, Korea (no DST)
  • UTC+10/+11: Eastern Australia (AEST/AEDT)
Working Hours Visualization

The colored bars show a 24-hour day with typical working hours (8 AM - 6 PM) highlighted in green. This helps you:

  • Quickly see if a time is during business hours
  • Compare working hours across multiple timezones
  • Find overlapping business hours for meetings
  • Avoid scheduling calls during nighttime hours

The red line indicates the current time in that timezone.