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VA Delivery
Local only

Free scheduling utility

Find the overlap before you book the meeting.

Compare a client workday with your local shift across Manila, Karachi, London and US time zones. The result uses the selected date, so daylight saving changes are included.

Inputs

Set both working windows

Use the date of your local shift.

Times are interpreted in each selected time zone, not in your device time zone.

Client working hours

Your working hours

Change an input to refresh the overlap.

Only the selected time zones and hours are used in this page. Nothing is saved or sent automatically.

Shared window

Your overlap

Select your hours to see the shared window.

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Your shift
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Client shift
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Your local overlap
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Client local overlap
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The result will include the selected date and DST rules.

Use the summary in a client message or meeting invite.

Why it helps

Make cross-border availability concrete.

Instead of translating a time in your head, compare the two actual working windows for one date. This is useful for recurring handoffs, live calls and setting a realistic response expectation with clients.

Common examples

  • Manila to New York often creates a late-evening PHT window.
  • Karachi to London commonly creates an afternoon PKT overlap.
  • US daylight saving time can move the overlap by one local hour.

Working guide

Time zone overlap questions

Does the calculator handle daylight saving time?

Yes. The calculation uses the browser time-zone database for the selected date, so US and European seasonal clock changes are reflected automatically.

Can I calculate an overnight shift?

Yes. If the end time is earlier than the start time, the tool treats the work window as crossing midnight in that time zone.

Is my schedule sent to a server?

No. The calculation runs in this browser tab. The site does not send your schedule to an AI service or save it in browser storage.