1. What is Duration Across Time Zones?

This calculator helps determine the actual duration of an event when the start and end times are in different time zones. It accounts for the time difference between locations to give you the true elapsed time.

2. How Does the Calculator Work?

The calculator uses the duration formula:

Where:

• \( end\_time \) — Local end time in hours
• \( start\_time \) — Local start time in hours
• \( timezone\_offset \) — Difference between time zones in hours (positive if destination is east, negative if west)

Explanation: The formula adjusts for the time difference between locations to calculate the true duration of an event or activity.

3. Importance of Time Zone Calculation

Details: Accurate duration calculation across time zones is crucial for scheduling international meetings, calculating work hours for remote teams, and planning travel itineraries.

4. Using the Calculator

Tips: Enter start and end times in 24-hour format (e.g., 14.5 for 2:30 PM). Timezone offset should be positive if the end location is east of the start location, negative if west.

5. Frequently Asked Questions (FAQ)

Q1: What if the duration calculation is negative?
A: The calculator automatically adjusts for crossing midnight by adding 24 hours to negative results.

Q2: How do I determine the timezone offset?
A: Subtract the start location's UTC offset from the end location's UTC offset (e.g., New York (UTC-5) to London (UTC+0) = +5 hours).

Q3: Does this account for daylight saving time?
A: You must account for DST in your timezone offset calculation if either location observes it during your event.

Q4: Can I use this for multi-day durations?
A: For durations longer than 24 hours, you'll need to manually add full days to the calculated duration.

Q5: What's the maximum timezone offset allowed?
A: The calculator accepts offsets between -12 and +14 hours, covering all standard time zones.