Rotate the time.
Share the compromise.
Plan a series for people in different time zones. This tool searches half-hour UTC slots and balances cumulative minutes outside each person’s preferred hours. Local times follow daylight-saving rules in your browser.
Dates above are UTC dates. Some participants may see the previous or next local day. Hours use a 24-hour clock; preferred windows must start and end on the same local day.
How fairness and daylight saving work
For each date, every half-hour UTC start is scored in 15-minute increments across the full meeting. Each participant receives one penalty minute for each meeting minute outside their local preferred hours, including weekends if selected. A greedy rotation first minimizes the highest cumulative penalty, then the total penalty, then the current meeting penalty. Ties favor the earlier UTC slot.
This is a transparent heuristic, not a guaranteed globally optimal schedule. Equal penalties do not capture personal circumstances. Review and agree on the result with participants. It does not read calendars or send invitations.
Local dates, times and offsets are calculated for each actual UTC instant using the browser’s IANA time-zone data, including DST transitions. Calendar export uses fixed UTC events. Governments can change time-zone rules; verify important future meetings with up-to-date software.