Timezone Helper

Convert times between any time zones, plan global meetings, check DST status. Zero dependencies — all data built-in, works in any environment.

Full city-to-timezone mapping: see references/cities.md.

When to use

• "What time is it in Tokyo right now?"
• "Convert 3pm New York to London time"
• "Schedule a meeting for our team in SF, London and Singapore"
• "Does Germany observe DST? When does it change?"
• "What's the UTC offset for IST?"
• "Find a time that works for NYC, Berlin and Beijing"

Core concepts