Lumara Time

Business Days Calculator

Custom work weeks and holiday lists.

  • Free
  • No signup
  • No login

Inputs

What do you want to do?
Working weekdays
Add or subtract (add mode)

Result

How this tool works

Enter the target date, time and time zone. The tool compares that exact moment with now and shows the remaining time as days, hours, minutes and seconds, plus totals.

It shows a snapshot taken when you calculate. For a ticking display use the Countdown Timer.

Time-zone rules come from the IANA database in your browser. This server uses database version 2026.5. If governments changed a rule very recently, the two can briefly disagree, so confirm important meetings with participants.

Frequently asked questions

What if the date has passed?

The tool shows how long ago it was.

Is the result affected by daylight saving?

Yes, correctly: the target is converted to an exact moment using the zone's rules for that date.

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