Diurn

Market horology

Exchange calendars and trading hours, as an API. Every session, holiday and early close for the world's markets, with the reasons attached.

The world's ten largest markets, two months back and two ahead. The loud cells are closures and early closes on days most markets trade; hover for why. Every calendar, on the timeline

Every market, keyed by MIC

2,821 of the 2,889 venues in the ISO 10383 registry answer with a trading calendar, across 119 countries. Look any of them up by its code.

Browse MICs How the coverage is evidenced

What changed in the registry

ISO republishes the MIC registry every month without saying what changed. Diurn keeps the record: venues added, removed and renamed, month by month.

The monthly changes