World Clock
Shows several cities at once with their offsets and marks the hours everyone is awake.
The times in several cities at once, and underneath them the question people actually have: if we meet at three, what hour is that for everyone else? The planner strip shades the next 24 hours by whether each city is working, awake or asleep.
Now
- UTC13:57:122026-11-10UTC · your zone
- New York08:57:122026-11-10EST · −5h from you
- London13:57:122026-11-10UTC · +0h from you
Meeting planner
| UTC | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 0011/11 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| New York | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 0011/11 | 01 | 02 | 03 | 04 | 05 | 06 | 07 |
| London | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 0011/11 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
Shaded columns are 09:00-18:00 local; pale ones are the middle of the night somewhere.
How to use it
Add the cities you work with
Your own zone is detected and listed first. The list is remembered in this browser.
Read the strip across
Each column is one hour starting from the current hour where you are. A column that is shaded in every row is an hour everyone can meet.
Copy the times into the invitation
The copy button writes one line per city with its offset, which is the form that stops people converting it wrongly themselves.
Common questions
Is daylight saving handled?
Yes, by the browser’s own copy of the IANA time-zone database — the same rules your operating system uses. No offset is written down anywhere in this tool, because a hardcoded offset is one that goes wrong the next time a country changes its rules, and several do every year.
Why does a row say “next day”?
Because the date there is not the date here. It is the single most common mistake in cross-zone scheduling, so it is marked rather than left for you to notice.
What counts as “working hours”?
09:00 to 18:00 local, and 07:00 to 22:00 counts as awake. They are a rough convention, not a claim about anyone’s contract — read them as a hint about who you are about to wake up.
My city is not in the list
The list is the thirty or so zones people usually want, not all four hundred. A neighbouring city in the same zone gives exactly the same times — Seoul and Busan are one zone, as are Berlin and Rome.
Feed it from
Timezone Converter
Converts a moment across timezones and shows a shared-hours grid for scheduling across regions.
Countdown Timer
Counts down to a duration or to a target moment, with a large display, a chime and a system notification.
Todo List
Keeps a checklist in your browser with due dates, tags and keyboard-first editing, exportable as Markdown.
Scratch Notepad
A plain-text scratchpad that saves as you type and survives a reload, with a word count.
Next
These accept what this tool produces, so the result can go straight in.
Add-to-Calendar & ICS
Builds Google, Outlook.com, Office 365 and Yahoo calendar links plus a downloadable .ics that Apple Calendar and Outlook desktop read.
Countdown Timer
Counts down to a duration or to a target moment, with a large display, a chime and a system notification.
Timezone Converter
Converts a moment across timezones and shows a shared-hours grid for scheduling across regions.
Bill Splitter
Splits a bill evenly or by weighted share so the parts sum to the total exactly, and turns what people already paid into who-pays-whom transfers.
CSV Cleaner
Trims cells, normalises headers, fixes number and date formats and reports rows with the wrong column count.
CSV Join
Joins two tables on a key column with inner, left, right or outer semantics and shows unmatched rows.