Time Zone Converter
Instantly convert time between cities worldwide. Perfect for scheduling calls, meetings, and travel planning.
About Time Zones
🌍 How Time Zones Work
The world is divided into 24 time zones, each roughly 15 degrees of longitude apart. Coordinated Universal Time (UTC) serves as the global reference point.
When you travel east, you add hours. When you travel west, you subtract hours. The International Date Line in the Pacific marks where the calendar date changes.
🇺🇸 US Time Zones
The continental US spans four time zones: Eastern (ET), Central (CT), Mountain (MT), and Pacific (PT). Alaska and Hawaii have their own zones.
Most states observe Daylight Saving Time (DST) from March to November, moving clocks forward one hour. Arizona and Hawaii do not observe DST.
💡 Scheduling Tips
- For US-Europe calls, aim for 8-10 AM ET (1-3 PM London)
- US-Asia meetings work best around 7-9 PM ET (next day morning in Asia)
- Always confirm if DST is in effect — it can shift times by an hour
- Use “UTC” as a neutral reference when coordinating globally
- Double-check the date — crossing the Date Line changes the day
⚠️ Watch Out For
Daylight Saving Time doesn’t happen everywhere or at the same time. The US and Europe switch on different dates, creating a few weeks of extra confusion each spring and fall.
Some regions like India (UTC+5:30) and Nepal (UTC+5:45) use half-hour or 45-minute offsets. Always double-check unusual time zones.
Frequently Asked Questions
What time is it in Los Angeles when it is 9 AM in New York?
When it is 9:00 AM Eastern Time in New York, it is 6:00 AM Pacific Time in Los Angeles — a three-hour difference. Select New York (Eastern) as the From zone and Los Angeles (Pacific) as the To zone, then enter 9:00 AM to confirm. The tool also shows a live clock for all four US time zones.
Does Daylight Saving Time affect time zone conversions?
Yes. Most US states observe DST from the second Sunday in March through the first Sunday in November, moving clocks forward one hour. The converter uses your selected date to apply the correct DST offset automatically. Arizona and Hawaii do not observe DST, which can shift their relative offset by one hour during spring and fall.
What is the best time to schedule a meeting between New York and London?
For US-UK calls, 8-10 AM Eastern Time (ET) works well, which is 1-3 PM in London. Outside of that window, business hours overlap poorly. Use the Best Meeting Time Finder on this page to enter both participants’ time zones and working hours, and the tool will highlight the overlap period.
How do I convert UTC time to US Eastern Time?
Eastern Standard Time (EST) is UTC minus 5 hours. Eastern Daylight Time (EDT) during DST is UTC minus 4 hours. For example, 14:00 UTC is 9:00 AM EST or 10:00 AM EDT. Select UTC as the From zone and New York (Eastern) as the To zone, enter your UTC time, and the calculator handles the DST offset automatically.
Why does India have a 30-minute time zone offset?
India Standard Time is UTC+5:30, a half-hour offset chosen historically to better align with geographic and political considerations. Nepal uses UTC+5:45, a 45-minute offset. These unusual offsets mean standard time zone math does not apply — always use the converter when scheduling calls with India or Nepal.