ブログ
時刻、タイムゾーン、タイマー、集中の続け方をわかりやすく解説します。
これらの記事は現在、英語のみで提供しています。
使い方ガイド
How to Use an Online Alarm Clock
Set a reliable browser alarm, get the sound working, and know when to use your phone instead.
How to Calculate Time Differences
Work out the difference between two times, across midnight and across time zones.
How to Convert Time Zones
A step-by-step way to convert time between zones, without daylight saving mistakes.
How to Use a Countdown Timer
Practical ways to use a countdown timer for cooking, study, exercise, and presentations.
時間の解説
What Is a 24-Hour Clock?
How the 24-hour clock works, how to convert it to AM and PM, and where it's used.
How Does a Stopwatch Work?
From mechanical to digital: how stopwatches measure time, and what lap and split times mean.
What Is the Pomodoro Technique?
The focus method built on short timed sessions: how it works, and how to adapt it.
How Many Hours Are in a Day?
24 is the simple answer, but days can be 23 or 25 hours long, and a solar day isn't exactly 24.
What Is UTC Time?
What Coordinated Universal Time is, how it differs from GMT, and why it matters.