Two-Time-Zone Meeting Finder · University of Idaho

Find a meeting time that works across Idaho's two time zones

Moscow and Coeur d'Alene run on Pacific time; Boise and Idaho Falls run on Mountain. Add your people, paint their weekly availability (or paste busy blocks from an .ics file), and this tool ranks the slots where the most people are free — shown in each person's local time, daylight-saving aware.

Add people — name, location (quick pick or any IANA zone), required or optional.
Set availability — drag on the weekly grid (in each person's own local time), or import busy blocks from .ics.
Pick a slot — click a heatmap cell or ranked slot, then export an .ics invite or copy a summary.

Planning week & meeting settings

Choose which week to plan and set the constraints for suggested slots.

Meeting length Buffer before/after (min) Working hours start Working hours end Include weekends

Working hours are applied in each participant's own local time, so a 9–5 window means 9–5 wherever they are. The buffer requires each required person to be free for that many minutes before and after the meeting. Slots are evaluated in 15-minute steps.

Participants

Add everyone who needs to be in the room. Mark who is required vs. optional.

No participants yet. Add at least two people (in different time zones) to see the heatmap.

Weekly availability

Click-drag on a person's grid to paint free time (green). Grey = busy. Or paste busy blocks from an .ics file.

Combined availability heatmap

Each cell shows how many people are free at that real instant, displayed in the reference zone. Warmer = more people available. Click a cell (or press Enter) to choose the slot.

Reference zone (for the grid)

Chosen slot

The meeting in every participant's local time. Export the .ics invite or copy the plain-text summary — both act on this chosen slot.

Best slots

Ranked: all required people present first, then most optional people. Adjacent equal-score starts are merged into one window. Each slot is shown in every participant's local time, DST-aware.

Data & sources

IANA Time Zone Database (tzdb 2026d) — zone list for the “any IANA zone” picker (zone1970.tab, 312 zones, public domain), from the IANA Time Zone Database, maintained by Paul Eggert et al. Project page: iana.org/time-zones. Retrieved 2026-09-13.
University of Idaho locations & time zones (quick picks) — Moscow (main campus), Coeur d'Alene, Boise, Idaho Falls, Twin Falls Research and Extension Center. Idaho's northern panhandle observes Pacific time; southern Idaho observes Mountain time (America/Boise).
iCalendar, RFC 5545 — Internet Engineering Task Force, rfc-editor.org/rfc/rfc5545 (retrieved 2026-09-13). Governs both the .ics busy-block import and the .ics invite export.
Intl.DateTimeFormat — MDN Web Docs (Mozilla), developer.mozilla.org (retrieved 2026-09-13). All time-zone and daylight-saving math in this app uses the browser's built-in IANA time-zone support — no network requests.
Intl.supportedValuesOf() — MDN Web Docs (Mozilla), developer.mozilla.org (retrieved 2026-09-13). Used to cross-check the embedded zone list against the browser's supported zones.

No participant, availability or calendar data ships with this app. If you load the sample team, those participants are clearly labelled as illustrative sample data — they are not real University of Idaho people.