How to use it
- Under Add a place, type a city or a region, such as Berlin or Europe, and click it. Add two to six places. The first one is the reference.
- Set the Meeting day. The grid is drawn for that day in the reference place.
- Read the grid. The shading shows working hours, night and weekends in each place. A date in a cell means that place is on another day.
- Click an hour in the grid, or press Enter on it, to see the Meeting time in every place. Use Copy as text to copy one line per place.
How the grid and the meeting time are worked out
Every place has its own clock, and that clock depends on the offset of its time zone from UTC at the moment in question. The offsets come from the zone rules of the IANA Time Zone Database, which the browser holds, so daylight saving changes apply on the right day for each place.
The columns of the grid are the 24 hours of the reference place (the first one) on the chosen day. Each row is one place, and each cell is that place's local hour at the same moment. When you choose a column, the result shows every place's local time and date for that moment.
- Working hours: 09:00 to 17:59 local time.
- Night: 22:00 to 05:59 local time.
- Saturday and Sunday (Friday and Saturday in Riyadh): every hour is weekend, even a working hour.
- On the day clocks move forward, the hour that is skipped cannot be chosen. On the day they move back, the repeated hour is taken at its first occurrence.
What this planner does and does not do
A time zone converter shows one moment in one other place. This page does more: it puts up to six places side by side, draws the whole day in a grid, shades working and night hours, and works out each place's daylight saving from the zone rules.
Times are calculated in your browser and nothing you choose is sent anywhere.
- It does handle daylight saving changes and offsets that are not whole hours, such as India's UTC+05:30.
- It does not know public holidays, national rules on working time, or the working hours of any one office or person. The shading uses 09:00 to 17:59 in every place.
- It does not send invitations, book rooms or read calendars.
Example: Istanbul, Berlin and New York on Tuesday, November 10, 2026
Istanbul is the reference, so its 24 hours make the columns. Only the 17 column is working hours in all three places: 17:00 in Istanbul is 15:00 in Berlin and 09:00 in New York. In the 16 column, Istanbul and Berlin are working but New York is at 08:00, before its working day starts.
Click the 17 column. The result shows 17:00, Tuesday, November 10, 2026 in Istanbul (UTC+03:00), 15:00 in Berlin (UTC+01:00) and 09:00 in New York (UTC-05:00). All three are inside working hours.
The gap between Berlin and New York is six hours on this day. The United States went back an hour on 1 November, a week after Europe did on 25 October, so for that week the gap was five hours.
| Place | Local time and date | Status |
|---|---|---|
| Istanbul (Europe) | 17:00, Tuesday, November 10, 2026 (UTC+03:00) | Inside working hours |
| Berlin (Europe) | 15:00, Tuesday, November 10, 2026 (UTC+01:00) | Inside working hours |
| New York (America) | 09:00, Tuesday, November 10, 2026 (UTC-05:00) | Inside working hours |
Frequently asked questions
Are the places or dates I choose sent to your server?
No. The times are calculated in your browser, from the zone rules that the browser already holds. Nothing you choose is sent anywhere, and the tool itself makes no network requests.
Does it handle daylight saving time?
Yes. Each place's offset on each day comes from the IANA zone rules, so the grid moves on the day a place changes its clocks. On a day when clocks move forward, the skipped hour cannot be chosen; on a day when they move back, the repeated hour is taken at its first occurrence.
Why is the first place called the reference?
The grid needs one place whose 24 hours become the columns, and the chosen day is that place's calendar day. Use the arrow buttons to move another place to the top and make it the reference.
Why are only two to six places allowed?
The limit keeps the grid readable on a phone, where a table with more rows becomes hard to scan. For a larger group, plan with two or three smaller groups of places.
Does the shading know about public holidays?
No. It shades 09:00 to 17:59 as working hours and 22:00 to 05:59 as night in every place, and it shades Saturday and Sunday as weekend, except in Riyadh, where it shades Friday and Saturday. Public holidays and each office's own hours are not part of the grid.
What does Copy as text put on the clipboard?
One line for each place: its name, its local clock time, the short date and its UTC offset on the chosen day, for example Berlin (Europe): 15:00 Tue, Nov 10, 2026 (UTC+01:00). The date words follow the language of the page.
Sources
- IANA Time Zone Database, the zone rules the browser uses
- IANA tz release notes, release 2016g: Turkey on permanent UTC+3 from 2016-09-07
- MDN: Intl.DateTimeFormat
- MDN: Intl.supportedValuesOf
Figures and text last checked on Tuesday, November 10, 2026.