Free Time Zone Overlap
The hardest part of global scheduling is not converting times - it is finding hours when everyone is actually awake and working. Pick two time zones and a date, and this tool maps the overlapping 9:00-to-17:00 working hours in both zones, DST-corrected, so you can propose meeting times with confidence.
How to Use the Time Zone Overlap
- Select the two time zones to compare.
- Pick a date so daylight saving is calculated correctly.
- Click Find Overlap to see shared 9:00–17:00 working hours.
Features
Choose any two time zones and a date, and the tool lays out the 9:00–17:00 working window of each side by side, highlighting where they overlap. Because you enter the actual date, daylight saving offsets are computed precisely for that day rather than using rough averages.
Benefits & Use Cases
Global teams find standup slots that work on both continents, salespeople book calls without waking anyone, and support teams plan shift handoffs across regions. Remote hiring managers use it to propose interview times that respect both sides.
Tips
Always enter the real meeting date - DST can shift the overlap by an hour between seasons. If there is no overlap at all, as often happens between the US and Asia, consider early or late slots outside 9–5 or lean on asynchronous updates. For three or more zones, compare pairs or use the Meeting Time Converter.
Frequently Asked Questions
What counts as working hours?
9:00 a.m. to 5:00 p.m. local time in each zone. The overlap is the part of the day when both zones are within that window.
Why do I need to pick a date?
Daylight saving offsets change through the year. The date lets the tool compute the exact offset for that day instead of guessing.
What if there is no overlap?
It happens - especially between the Americas and Asia. Try slots just outside 9–5, rotate the inconvenience fairly, or use asynchronous updates.
Can I compare more than two time zones?
Compare them pairwise here, or enter one meeting time in the Meeting Time Converter to see it across many cities at once.
Does it account for lunch breaks?
No - it shows the full 9:00–17:00 overlap. Carve out lunch or focus blocks from the shared window as needed.
Is it free to use?
Yes. Free with no sign-up, and all calculations happen in your browser.
Related Tools
Time Zone Converter
Convert any date and time between 28 world time zones with daylight saving handled automatically. Free converter with swap button, no sign-up.
Open tool →Meeting Time Converter
Pick a meeting time in your time zone and instantly see the local time for attendees in major cities worldwide. Free for global teams, no sign-up.
Open tool →World Clock
Live world clock showing the current time in 12 major cities around the globe, updating every second. Switch 12/24-hour formats. Free, no sign-up.
Open tool →Current Time
See the exact current time: local, UTC, Unix timestamp and ISO 8601, all updating live every second with one-click copy buttons. Free, no sign-up.
Open tool →Business Days Calculator
Count business days between two dates, skipping weekends and your custom holidays. Free online calculator with a full breakdown - no sign-up needed.
Open tool →Working Days Calculator
Add or subtract working days from any date, skipping weekends and your custom holidays. Free calculator with the result weekday, no sign-up.
Open tool →