Time, made tactile.
What Chronos is for.
Chronos holds four time tools: a world clock, a time zone converter, a countdown, and a pomodoro timer. The first two answer “what time is it there?” The other two answer “how long until I stop?”
Remote teams use the converter to find a meeting slot that lands inside working hours for everyone. People with family or clients abroad keep the world clock open so they check before they call. The countdown is for talks, demos, and launches with a hard deadline. The pomodoro is for anyone who works in blocks and wants a break they can’t talk themselves out of.
All four run in your browser and read your device’s clock. There is no server lookup and no account. City lists, converter participants, and pomodoro settings are saved in your browser’s local storage on this device, so they come back next time. Clear your site data and they are gone.
Which tool to open
Questions people ask.
How do I find a meeting time across time zones?
Open the Timezone Converter and add one row per person or office. Drag the cursor along any row and every other row jumps to the same moment in its own local time. Look for a spot where every row sits in the shaded 9-to-5 band. If there isn’t one, someone has to start early or stay late, and the strip shows you who.
Does the converter handle daylight saving time?
Yes. It uses the IANA time zone database, the same rules your operating system uses, so clock changes land on the right date for each city. That includes a daylight saving switch that falls inside the two days shown on the strip.
Will the countdown drift if I switch tabs?
No. It measures elapsed time against the system clock instead of counting timer ticks. Browsers slow down timers in background tabs, but when you come back the display jumps to the correct time.
Can I share a countdown as a link?
Yes. Add ?d=25 to the countdown address for 25 minutes. Numbers up to 240 are read as minutes and anything larger as seconds. To count down to a fixed moment, use ?to= with a date and time, such as ?to=2026-12-31T23:59:00Z.
Why doesn’t the pomodoro send desktop notifications?
A notification interrupts the focus the timer is there to protect. A soft chime and a change in background color mark each switch instead. If you’d rather pick the next block yourself, turn off auto-advance in settings and the timer waits after each one.