About WhereWhen
WhereWhen is a small, growing set of single-purpose time-zone tools. Each one answers one question well: it's live, computed in your own browser from the IANA time-zone database, daylight-saving aware, and free of clutter. Here's what's in the cluster today.
Two-city time converter
Convert a time between any two cities — both directions at once — with the current offset, each side's daylight-saving status, and a chart of when the working days overlap. A few popular pairs:
City time-zone pages
A page for each city with its current local time and every converter that involves it — handy when one city is fixed and the other keeps changing:
Type any city
Don't see your city above? The converter takes any of 27,000+ cities worldwide — start typing into either side to change it, then copy the link to share the exact pair you built.
Meeting planner
Picking a call time across two or three cities? The planner ranks every hour by how much each side has to give up, so you land on the fairest slot instead of the one that only suits one zone:
This is a cluster of small tools, and it's still growing — new ones will show up here as they launch.