Finding a meeting time that works for team members in New York, London, and Singapore is harder than it sounds. Standard time zone converters only show you one time at a time — they don't tell you when everyone is actually available simultaneously. This guide shows you how to find working hours overlap across any combination of time zones in seconds, for free, with no sign-up needed.
Why Scheduling Across Time Zones Is Difficult
DST Shifts Everything
Daylight Saving Time moves clocks in the US, UK, and Europe — but on different dates. A team that overlaps by 2 hours in winter may overlap by 1 hour or 3 hours in summer depending on who has already changed their clocks.
Half-Hour and Quarter-Hour Offsets
India is UTC+5:30. Nepal is UTC+5:45. Iran is UTC+3:30. These half- and quarter-hour offsets break the simple mental arithmetic most people use, making it easy to miscalculate overlap windows.
Three or More Participants
With two people, the overlap window is easy to visualise. With three or more across different continents, the intersection can shrink to zero — or exist only at inconvenient times like 6 AM or 10 PM for someone.
Non-Standard Hours
Not everyone works 9–5. A developer in Bangalore might work 11 AM–8 PM to cover more US overlap. A Sydney support team might work 6 AM–2 PM. Finding the actual overlap requires individual schedule data, not just time zone offsets.
How to Find Working Hours Overlap in 5 Steps
Open the Working Hours Overlap Calculator
Go to the NextUtils Working Hours Overlap tool. No account or sign-up needed — the tool is ready immediately with two default participants (UTC and Eastern Time).
Set the date
Choose a date using the date picker. This matters because DST rules change on specific dates — the tool automatically applies the correct UTC offset for each time zone on the selected date.
Add participants and their working hours
For each team member, select their time zone and set their working hours (start and end time in their local time). Use the "Quick add timezone" buttons to add common zones instantly. You can add as many participants as needed.
Adjust settings (optional)
Open Settings to set the time slot size (15, 30, or 60 minutes) and the minimum overlap duration. For example, set 30 minutes minimum to filter out tiny overlap windows that aren't practical for real meetings.
Click "Find Overlaps" and review results
The tool shows a visual 24-hour UTC timeline with each participant's available hours highlighted. Overlapping windows are marked in green. The Best Meeting Times list shows the top windows sorted by duration, with local times for each participant.
No sign-up · DST-aware · Works for any time zone combination
Common Remote Team Overlap Windows
These are typical results for standard 9–5 working hours in each location. Actual overlap varies by DST period and individual schedules.
| Team Combination | Typical Overlap (UTC) | Duration | Notes |
|---|---|---|---|
| New York + London | 14:00–17:00 UTC | 3 hrs | Shrinks to 1 hr when US/UK change clocks on different dates |
| New York + India (IST) | None (standard 9–5) | 0 hrs | EST 9–5 = UTC 14–22; IST 9–5 = UTC 3:30–11:30 — no intersection. Teams typically adjust to IST 11:30 AM–8:30 PM for 1–2 hrs of NY morning overlap. |
| London + Singapore | None (standard 9–5) | ~0 hrs | SGT 9–5 = UTC 1–9; GMT 9–5 = UTC 9–17 — end points meet exactly at UTC 9:00 with no usable overlap window. |
| New York + Sydney | None (standard 9–5) | 0 hrs | Opposite sides of the globe — one team works before/after the other with no overlap at standard hours. |
| London + Berlin + Warsaw | 09:00–16:00 UTC | 7 hrs | Berlin/Warsaw are CET (UTC+1), so their 9–5 = UTC 8–16. Overlap with London (UTC 9–17) is UTC 9–16 = 7 hrs. |
Key Features of the Tool
Automatic DST Detection
The tool automatically applies Daylight Saving Time rules for US, UK, Europe, Australia, and New Zealand. Switch the date from January to July and the overlap windows update instantly to reflect summer clock changes.
Overnight Shift Support
Set an end time earlier than a start time to define overnight shifts — for example, 22:00 to 06:00. The tool correctly handles schedules that span midnight.
Shareable Links
Click "Copy Link" to get a URL that encodes the current team configuration. Share it with colleagues so they can open the exact same setup without re-entering data.
CSV Export
Export any overlap window as a CSV file containing UTC times, duration, and each participant's local start and end time. Import directly into spreadsheets or calendar tools.
Visual 24-Hour Timeline
See a full day timeline with each participant's availability shown as a coloured row. Overlap windows are highlighted in green. A red marker shows the current UTC time when viewing today.
Configurable Resolution
Set the time slot size to 15, 30, or 60 minutes and a minimum overlap duration. Use minimum overlap to hide impractically short windows — for example, filter out anything under 30 minutes.
Tips for Getting the Best Results
Recommended approach
- ✓Check the date around DST transitions (mid-March and early November for the US)
- ✓Use 30-minute slots for a good balance of precision and readability
- ✓Set minimum overlap to 30 minutes to hide unusable micro-windows
- ✓Use the shareable link to send the setup to all team members for feedback
- ✓Export CSV and paste into a team calendar or Slack message
Things to keep in mind
- ⚠DST transition weekends can produce unusual short-overlap results — verify both before and after the date
- ⚠The tool supports 16 pre-defined timezones — very niche zones (e.g. Nepal UTC+5:45) are not yet included
- ⚠The shareable link encodes all participant data in the URL — avoid sharing sensitive schedules in public channels
- ⚠Overlap times are shown in UTC in the timeline — use the local time rows or the results list for each person's local time
Frequently Asked Questions
Does the tool handle Daylight Saving Time automatically?
Yes. The tool applies DST rules automatically based on the selected date for all supported zones — including US Eastern/Central/Mountain/Pacific (2nd Sunday March – 1st Sunday November), UK/GMT (last Sunday March – last Sunday October), and Central European Time. Sydney and Auckland use Southern Hemisphere rules (October – April).
Can I set overnight working hours that cross midnight?
Yes. If you enter an end time that is earlier than the start time — for example, 22:00 to 06:00 — the tool correctly treats this as an overnight shift spanning midnight. This is useful for night shift teams or workers in extreme time zones.
How many participants can I add?
There is no hard limit. You can add as many participants as your team requires. The visual timeline grows to accommodate each row, though very large numbers of participants may require scrolling.
How do I share the configuration with my team?
Click the "Copy Link" button. The tool encodes all participant time zones and working hours into the URL. Anyone who opens the link will see the exact same configuration, ready to view or modify.
What does the visual timeline show?
The timeline shows a full 24-hour day in UTC. Each row represents one participant, with their working hours highlighted in blue. The bottom row shows the overlap window in green — when all participants are simultaneously available. A red marker shows the current UTC time if you are viewing today's date.
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