Found a schedule discrepancy?

Send the market, affected date, expected status, and an official exchange URL. Reports backed by venue-owned notices can be checked fastest.

Report a data issue

Correction process

A public, evidence-led workflow for reviewing schedule changes.

1. Provide the affected record

Include the exchange name or market code, the affected local date, the status currently shown, and the status you believe is correct.

2. Link an official source

Use an exchange-owned holiday calendar, market notice, emergency announcement, clearing circular, or other venue publication. Secondary calendars can identify a possible problem but are not treated as final authority.

3. Review the local-time effect

The correction is checked against the exchange timezone, regular weekday sessions, observed-holiday rules, and any emergency override before the normalized record is changed.

4. Preserve the reason

Emergency closures and exceptional sessions should retain a reason and source context so a normal calendar holiday is not confused with a weather, regulatory, or operational override.

Before making a time-sensitive decision

Check the official exchange notice and your broker or clearing communication. This site is an informational reference, not an execution instruction.

Official source directory Status methodology Disclaimer

ONEF.

Data Corrections Policy

Corrections and transparency