HourSwift

Time Zone Converter

What time is it over there?

Enter a time and your source zone — get every target zone at a glance, a 24-hour comparison, and the overlap that works for everyone.

Convert a time

Auto-updates as you type. DST is handled for you.

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Find a meeting time

Add each participant's time zone and work window — HourSwift finds the longest overlap in the next 3 days.

Participants

Work start and end are local hours (0–24). Leave bright or set overnight past-midnight windows.

24-hour comparison

Each source hour against every target zone. The highlighted row is the current source hour.

Built for teams that span continents

HourSwift is for anyone coordinating across time zones without the guesswork. Distributed teams, remote freelancers, and support staff use it to pin down a single moment and see it reflected in every relevant region simultaneously. Instead of mental math or scattered tabs, you get one grounded reference point with the ability to add as many zones as your schedule demands. It is particularly useful when planning recurring meetings or onboarding calls where getting the hour wrong means a missed connection or a colleague waiting unnecessarily.

Anchor a time and branch outward

  1. Select your Source time zone from the dropdown to set the reference location.
  2. Enter the Time and Date you want to convert using the provided input fields.
  3. Toggle 24-hour format if you prefer military time over the standard AM/PM display.
  4. Click Add zone for each additional region you need to compare against.
  5. Press ⇄ to swap directions, or use + Add participant to plan around people directly.

Time zone basics

How does daylight saving time affect a conversion?

When the US and Europe switch on different dates, a fixed numeric offset gives wrong answers for weeks. HourSwift reads today's real offset for each zone, so the gap between New York and London is 5 hours in winter and 4 hours in summer, exactly as it should be.

Why is the time different for places at the same offset?

Same UTC offset still means different civil time because of DST timing. For example, distant zones can share an offset but change clocks on different days. Always convert by place, not by offset alone.

What is the best overlap for a US–Europe meeting?

With US East Coast at UTC-5 in winter, the shared window is typically 15:00–18:00 in Paris (morning on the US side) or 08:00–10:00 in New York (afternoon in Europe). The planner above computes this exactly for your participants.

Does this tool send my times anywhere?

No. Everything runs entirely in your browser — your dates, zones and work windows never leave the page. There is no server and nothing is stored.

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