Reference · Last updated May 14, 2026

Time Zone Reference

Use this page when you need a quick reminder of where common zones sit.

Covers

Common zones and common offsets used in planning.

Useful when

You need a fast reminder before converting a meeting time.

Watch out

A city and a time zone are not always identical.

Common zones

UTC Coordinated Universal Time, the common baseline for many systems.

America/New_York Eastern Time in the United States.

America/Chicago Central Time in the United States.

America/Denver Mountain Time in the United States.

America/Los_Angeles Pacific Time in the United States.

Europe/London UK time and a common reference for European scheduling.

Europe/Paris Central European time reference.

Asia/Singapore Southeast Asia business scheduling reference.

Asia/Tokyo Japan standard time.

Can a city and a time zone differ?

Yes. A city is a place; a time zone is a rule set that can apply to many places.

Can offsets change during the year?

Yes, daylight saving time can shift the effective offset.

When should I use the converter instead?

Use the converter when the exact moment matters and you need a precise output.

A clean 2026 calendar reference with month lengths and holiday planning notes.

A clean 2027 calendar reference with month lengths and holiday planning notes.

Federal holiday dates in the United States for 2026.