Distributed-team tooling · 2026 · Solo — research, product design, build, verification
Overlap Loom
An interactive cross-time-zone planner for finding the weeks when one recurring meeting slips outside someone’s work window.
The problem
A weekly meeting fixed to one location’s wall clock does not guarantee stable local times elsewhere: daylight-saving transitions happen on different dates, and some zones never shift. Calendar world clocks help with spot checks, while iCalendar standards make time-zone semantics explicit. Overlap Loom turns the next eight occurrences into one bounded comparison without claiming calendar availability or creating an event.
Architecture
Key decisions
Compare future occurrences, not just world clocks
Eight aligned Mondays reveal the gap between European and North American offset changes and make a stable-looking recurring slot inspectable before it is scheduled.
Fix one anchor wall time
The planner models a common calendar decision: keep a weekly local time stable for the organizer, then show exactly what every other participant receives.
Use a loom, not another inspector
One shared meeting needle crosses continuous participant threads and aligned date bands. The Compare composition deliberately avoids the prior Foundry split panes, topbars, warm-paper palette, and source/result workflow.
Keep the boundary honest
The MVP uses curated zones and eight dates, stores nothing, creates no calendar event, reads no availability, and tells the user to verify the final event in their calendar.