Bobek

Free world time tool

Time Zone Converter

Convert any date and time between cities, compare your team’s working hours, and avoid daylight saving surprises.

Your local time
Your detected time zone
Choose a destination city

Your time

--:-- Choose a valid date and time UTC offset

Converted time

Same day
--:-- Waiting for a valid time
Destination Time difference

Ready.

World clock

Compare cities at a glance

Add the places that matter to you. Saved cities stay on this device.

Meeting planner

Find a time that works everywhere

Tap any hour to use it in the converter. Colours indicate typical local working hours.

Best overlap Calculating…
Everyone working Working hours Early or evening Night

Clock-change check

Upcoming offset changes

See whether either selected location is expected to change its clocks within the next year.

Private by design. Conversion happens in your browser. Bobek does not receive the dates, times, or cities you enter.

Quick guide

How to convert time zones

The converter starts in live mode, keeping every watched city on the current minute. Change the date or time whenever you need to plan a past or future event.

  1. 01

    Choose two locations

    Search by city or enter an IANA time-zone name. Location-based zones are safer than ambiguous abbreviations such as CST or IST.

  2. 02

    Select the date and time

    Use the present time, pick another date, or move one day at a time. The applicable offset is calculated for that exact date.

  3. 03

    Compare, plan, and share

    Add more cities, scan the 24-hour meeting planner, copy the result, or share a link that recreates your selected conversion.

Time zone answers

Accurate planning across clock changes

A city’s UTC offset is not always permanent. The selected location and date both matter, especially when daylight saving rules change.

Does this time zone converter adjust for daylight saving time?

Yes. The converter uses named IANA time zones and the time-zone information supplied by your browser, so the applicable UTC offset is calculated for the date you select.

Why can the time difference between two cities change?

Countries can start and end daylight saving time on different dates, while some do not use it at all. As a result, the difference between two cities can change during the year.

What time does the converter use by default?

It starts with the present time in the time zone detected from your device. Use the Now button at any point to return to the current time.

Are abbreviations such as CST and IST reliable?

Time-zone abbreviations can be ambiguous. This converter uses location-based identifiers such as America/Chicago and Asia/Kolkata so the intended rules are clear.

What happens during a daylight saving clock change?

Some local times occur twice when clocks move back, while others do not exist when clocks move forward. The converter detects these cases and displays a warning instead of silently returning a misleading result.

Does Bobek store the cities and times I enter?

Conversions happen in your browser. Saved comparison cities and clock-format preferences stay on your device unless you intentionally copy and share a conversion link.

Popular conversions

Open a popular pair, then adjust the automatically selected current date and time if needed.

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