Guides — how to use clocks, alarms and time zones

Long reads about time: alarms, sleep, time zones, daylight saving and counting days.

2 guides in “Alarms”.

Alarms 2026-08-24 7 min read

How to Set an Alarm on Any Device

Set a reliable alarm on an iPhone, Android phone, Windows or Mac computer, smart speaker, or web browser, with practical checks that prevent missed alerts.

By Online Alarm Clock

Alarms 4 min read

Alarm

To turn off a smoke alarm that is sounding, use the hush or silence button on the unit, then check for smoke or steam. If it keeps sounding, leave and treat it as a real alert.

By Online Alarm Clock