How to time a class activity for a global volunteer group

When volunteers join from different countries, a simple activity timer can become confusing. One person may see the start time as morning, another as evening, and daylight saving changes can shift local clocks by an hour.

Choose one shared start time, say exactly when the activity begins and ends, then use a countdown or stopwatch to keep the session on track. The Timer & Stopwatch runs in your browser, so you can keep the timing visible without installing anything.

Time the activity

1. Open the Timer & Stopwatch on the device you will use to lead the activity.
2. Before the session, agree on a start time with a date and a reference time zone, such as June 12 at 16:00 UTC. Ask volunteers to check what that date and time means where they are.
3. When everyone is ready, set the timer to the activity length and start it at the announced moment. For example, use 10 minutes for a short discussion or 25 minutes for a focused task.
4. Give the group a spoken warning near the end, such as “Two minutes remaining,” and say clearly when time is up. If you need to measure how long an activity actually takes rather than count down, use the stopwatch instead.

The timer runs on the device where you opened it. It does not synchronize a countdown across every volunteer's screen, so use the timer as the facilitator's reference and announce the start and finish to the group.

Choose a time everyone can follow

Use UTC for the shared reference

UTC is a common reference time that does not change for daylight saving time. Giving a date and UTC time makes the meeting unambiguous, even when volunteers live in places that change their clocks on different dates. Ask people to convert that reference to their local time before the session, rather than asking everyone to do time-zone math during class.

Include the date and a city when using local time

If your group prefers a local reference, include a city and calendar date, not just a time-zone abbreviation. For example, “10:00 a.m. in Chicago on June 12” is clearer than “10:00 CST.” Abbreviations can be used for different zones, and the offset from UTC can change during the year.

Pick a duration that fits the activity

Use a short countdown for one task with a firm finish. Use separate timed rounds when volunteers need to discuss, report back, or switch roles. A stopwatch is useful when the activity should end naturally and you want to note its elapsed time, but it does not tell participants when a planned time limit is approaching.

How to avoid timing problems

1. Write the start time in one consistent format. Put the date, time, and reference zone in the invitation and repeat them at the start of the session. Avoid phrases such as “next Friday morning,” which can mean different dates or hours across regions.
2. Check the device clock before the session. If your computer shows an unexpected local time, check Settings › Time & language › Date & time on Windows 11. On a Mac, check System Settings › General › Date & Time. On an iPhone or iPad, check Settings › General › Date & Time; on Android, look under Settings › System › Date & time. Menu names can vary by device.
3. Announce a clear start cue. Tell volunteers whether the countdown starts when you say “go” or when the next task appears. If someone joins late, keep the original finish time unless the whole group agrees to reset.
4. Leave a buffer for transitions. Add a few minutes between activities for questions, translation, or slower connections. A 15-minute task followed by a 5-minute share-out needs a 20-minute block, not a 15-minute timer.
5. Plan a backup cue. Say the finish time aloud and keep an eye on the countdown. If you share your screen, confirm that the timer is visible before the activity begins, and do not rely on every participant hearing an alert.

Make recurring sessions easier

For a group that meets regularly, keep a reusable schedule with the activity name, duration, start time in UTC, and the meeting date. Send it in advance so volunteers can check their own local time. A shared world clock can also help the group see the current time in several locations; see How to build a world clock for an online team.

Recheck the local time whenever a session falls near a daylight saving change. Countries do not all switch on the same day, and some do not change clocks at all. Keeping UTC as the reference and stating the full date avoids most one-hour surprises.

For a timed activity, keep the countdown on the facilitator's device and tell volunteers the same start and end cues out loud.