Best candidate slot
10 Mar, 12:00 - 10 Mar, 13:00 UTC
Overall 73.64 | Fairness 72.52
Time Zone Overlap Planner
Rank the best global meeting windows across 2-8 time zones with fairness-aware rotation and DST transition warnings.
Overlap Results
Global Team Map
Participant locations and local candidate times for the current best slot.
New York
New York
08:00 - 09:00 (America/New_York)
London
London
12:00 - 13:00 (Europe/London)
Bangalore
Bangalore
17:30 - 18:30 (Asia/Kolkata)
Top Slot Scoreboard
Overall score ranking for the strongest candidate windows.
#1 10 Mar, 12:00 - 10 Mar, 13:00 UTC
Fairness 72.52 | Inconvenience 2.5
73.64
#2 11 Mar, 12:00 - 11 Mar, 13:00 UTC
Fairness 72.52 | Inconvenience 2.5
73.64
#3 12 Mar, 12:00 - 12 Mar, 13:00 UTC
Fairness 72.52 | Inconvenience 2.5
73.64
#4 13 Mar, 12:00 - 13 Mar, 13:00 UTC
Fairness 72.52 | Inconvenience 2.5
73.64
#5 14 Mar, 12:00 - 14 Mar, 13:00 UTC
Fairness 72.52 | Inconvenience 2.5
73.64
Best Slot Inconvenience
Lower values mean less local-time stress for participants.
New York
08:00 to 09:00
1.0
London
12:00 to 13:00
0.0
Bangalore
17:30 to 18:30
1.5
Top candidate windows
| UTC window | Overall | Fairness | Local times |
|---|---|---|---|
| 10 Mar, 12:00 - 10 Mar, 13:00 UTC | 73.64 | 72.52 | New York 08:00-09:00 | London 12:00-13:00 | Bangalore 17:30-18:30 |
| 11 Mar, 12:00 - 11 Mar, 13:00 UTC | 73.64 | 72.52 | New York 08:00-09:00 | London 12:00-13:00 | Bangalore 17:30-18:30 |
| 12 Mar, 12:00 - 12 Mar, 13:00 UTC | 73.64 | 72.52 | New York 08:00-09:00 | London 12:00-13:00 | Bangalore 17:30-18:30 |
| 13 Mar, 12:00 - 13 Mar, 13:00 UTC | 73.64 | 72.52 | New York 08:00-09:00 | London 12:00-13:00 | Bangalore 17:30-18:30 |
| 14 Mar, 12:00 - 14 Mar, 13:00 UTC | 73.64 | 72.52 | New York 08:00-09:00 | London 12:00-13:00 | Bangalore 17:30-18:30 |
| 15 Mar, 12:00 - 15 Mar, 13:00 UTC | 73.64 | 72.52 | New York 08:00-09:00 | London 12:00-13:00 | Bangalore 17:30-18:30 |
| 16 Mar, 12:00 - 16 Mar, 13:00 UTC | 73.64 | 72.52 | New York 08:00-09:00 | London 12:00-13:00 | Bangalore 17:30-18:30 |
| 10 Mar, 12:30 - 10 Mar, 13:30 UTC | 72.14 | 69.8 | New York 08:30-09:30 | London 12:30-13:30 | Bangalore 18:00-19:00 |
4-week fairness rotation
- Week 1: 10 Mar, 12:00 - 10 Mar, 13:00 UTC (fairness 72.52)
- Week 2: 11 Mar, 12:00 - 11 Mar, 13:00 UTC (fairness 72.52)
- Week 3: 12 Mar, 12:00 - 12 Mar, 13:00 UTC (fairness 72.52)
- Week 4: 13 Mar, 12:00 - 13 Mar, 13:00 UTC (fairness 72.52)
Americas Pack
Use SF / NYC / Sao Paulo assumptions for cross-continent team planning and handoff windows.
Europe Pairing
Model London/Berlin overlap with APAC and Americas partners using fairness-aware recurring schedules.
APAC Network
Compare Bangalore/Singapore/Tokyo/Sydney windows before finalizing recurring global standups.
How To Use This Planner
- Add participant time zones and working-hour windows.
- Set meeting duration, start date, and planning horizon.
- Review ranked overlap candidates with fairness scores.
- Use 4-week rotation suggestions for recurring meetings.
- Check DST warnings before locking calendar invites.
- Save a shareable link with your assumptions, then run one conservative and one optimistic scenario before deciding.
For AI Agents (Optional)
Human mode is default. You can ignore this section unless you use AI agents or structured automation.
Agent Contract
Contract: timezone_overlap_planner v1
{
"tool": "timezone_overlap_planner",
"participants": [
{ "id": "nyc", "name": "New York", "time_zone": "America/New_York", "work_start_hour": 9, "work_end_hour": 17 },
{ "id": "lon", "name": "London", "time_zone": "Europe/London", "work_start_hour": 9, "work_end_hour": 17 },
{ "id": "blr", "name": "Bangalore", "time_zone": "Asia/Kolkata", "work_start_hour": 10, "work_end_hour": 19 }
],
"meeting_duration_minutes": 60,
"start_date": "2026-03-10",
"range_days": 7,
"slot_interval_minutes": 30
} Frequently Asked Questions
How many participants can I include?
This planner supports 2 to 8 participants and ranks deterministic overlap windows across a selected date range.
How does fairness rotation work?
The planner selects top windows while rotating inconvenience burden across weeks to avoid repeatedly penalizing the same region.
Does it handle DST changes?
Yes. It checks timezone offsets across the selected range and flags DST transitions that may shift local meeting times.
Can agents invoke this directly?
Yes. The deterministic `timezone_overlap_planner` contract is available in model context and in the public contract JSON.
Is this tool free and private to use?
Yes. AI Biz Hub tools are free, no-signup browser tools. Inputs stay in your browser unless you choose to share a URL.
Can I use this with AI agents too?
Yes. Human mode is the default experience. If you use AI automation, open the optional 'For AI Agents' section for deterministic contracts.
Is this professional advice?
No. Outputs are business planning estimates — not legal, tax, or accounting advice.