Condition in each zone
workday start ≤ local time(t) and local time(t) + duration ≤ workday end
Local time uses the zone’s offset at instant t, daylight saving time included.
Meeting Time Planner Across Time Zones
Pick a date, two time zones and a working window: the tool lists the start times that fall within office hours on both sides, daylight saving time included.
Check the date, zones and working hours: the workday end must come after its start.
Available slots
Time zone A (organizer)Time zone B
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How does this tool work?
Setting up a call between London and New York, Paris and Chicago or Berlin and Singapore means juggling time differences that change with the seasons. This planner lists, for a given date, the meeting start times that fall within the working window of both time zones at once, and shows each slot in each participant’s local time. If there is no overlap the result is 0: a sign that you need to widen the window or shorten the meeting.
The date is read as a calendar day in time zone A, the organizer’s: the tool walks through that day from midnight to midnight, zone A local time, in 30-minute steps.
For each start time it works out the local time in each zone from your browser’s IANA time zone data, daylight saving time included. A slot is kept if the meeting starts after the workday start and ends no later than the workday end, in both zones. The same working window applies to both participants.
Slots are shown side by side with the date on each side: a slot can fall on the same day for one person and on the previous or next day for the other. At most 24 slots are listed.
How to use this tool
Choose the date and the zones
The date is the organizer’s (zone A). Then select the other participant’s zone (zone B).
Set the working window and duration
Enter the acceptable start and end of the day, then the meeting length in minutes (in 15-minute steps).
Pick a slot
Each row gives the start time in zone A and in zone B. Copy it into your invitation and mention both times.
How a slot is selected
An instant t (start time) is kept when it suits both time zones.
Example: at 13:00 UTC on 9 October 2026 it is 15:00 in Paris and 09:00 in New York; a 60-minute meeting ends at 16:00 and 10:00, inside both 09:00–17:00 windows.
Use cases
Transatlantic meetings
Find the shared window between Europe and North America, often limited to the European afternoon and the American morning.
Europe–Asia teams
Spot the few European morning slots that still fall within the working day in Singapore, Tokyo or Sydney.
Interviews and client calls
Offer a candidate or a client times that fall within their office hours, without mental arithmetic.
Clock-change weeks
Compare a date in March or late October–early November, when Europe and the United States change their clocks on different days, with an ordinary date.
Examples
Paris and New York in autumn
With a 6-hour gap the shared window lasts only two hours, and a one-hour meeting must start by 4 pm Paris time.
Input
10/09/2026 · Europe/Paris + America/New_York · 09:00–17:00 · 60 minResult
3 slots: 15:00, 15:30 and 16:00 in Paris (09:00, 09:30, 10:00 in New York)The same cities in March
The United States moved to daylight time on 8 March and Europe only does so on 29 March: the gap drops to 5 hours and the window widens.
Input
03/20/2026 · same settingsResult
5 slots: 14:00 to 16:00 in ParisParis and Sydney
With a 9-hour gap in October, a 09:00–17:00 window gives no slot; widening it by one hour on each side reveals one.
Input
10/09/2026 · Europe/Paris + Australia/Sydney · 08:00–18:00 · 60 minResult
1 slot: 08:00 in Paris, 17:00 in SydneyTips and best practices
- If no slot appears, widen the window (08:00–18:00), shorten the meeting, or share the burden: early for one side one week, late for the other the next.
- Always write both times in the invitation (“3 pm London / 10 am New York”): it is the best protection against misreading.
- In late March and late October–early November, Europe and the United States change their clocks on different dates: double-check recurring meetings in those weeks.
- To convert one specific time that is already fixed, use the time zone converter instead.
Sources and references
- IANA — Time Zone Database (opens in a new tab)Page in English
- Directive 2000/84/EC of the European Parliament and of the Council of 19 January 2001 on summer-time arrangements (opens in a new tab), Official Journal of the European Union, 2001Page in English
- 15 U.S. Code § 260a – Advancement of time or changeover dates (opens in a new tab), Legal Information Institute, Cornell Law SchoolPage in English
Frequently asked questions
How do I find a meeting time between the UK and the US?
Choose Europe/London and the relevant US zone (America/New_York for the East Coast, America/Los_Angeles for the West Coast). With a 9-to-5 window the East Coast leaves a short afternoon window in London; the West Coast, eight hours behind, leaves none.
Is the date in my time zone or the other one?
In zone A. Slots cover zone A’s calendar day; on the zone B side they may fall on the previous or next day, which the displayed date shows.
Is daylight saving time taken into account?
Yes, for each zone and for the chosen date, from your browser’s IANA time zone database.
Why are slots 30 minutes apart?
That is the step between proposed start times, matching usual calendars. The meeting length itself is set in 15-minute steps.
Can I compare more than two time zones?
Not yet: the tool compares two zones with the same working window. For three participants, first find the window between the two zones furthest apart, then check the third with the time zone converter.
Are my settings sent to a server?
No. The calculation runs in your browser.
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