A useful answer before you leave
Open Day Guide brings U.S. holiday dates and organization-specific calendars into one place. The purpose is practical: help you check a trading session, plan a mailing or avoid an unnecessary trip.
This guide is independently operated. It is not a government agency and does not speak for the exchanges, banks, carriers, schools or retailers listed. No institutional affiliation or expert endorsement is claimed.
What this edition covers
This guide covers 2026 and 2027 federal dates, verified NYSE sessions, the 2026 Nasdaq and carrier calendars, and practical links for local services. Later-year schedules that have not been reviewed are explicitly unconfirmed.
Retail closures are shown where an official policy or announcement establishes them: Costco’s recurring warehouse holidays, Walmart’s two 2026 holiday closures and Target’s standing Thanksgiving policy. Other store hours, schools, libraries, DMV offices and courts remain local checks.
Designed to get you on your way
No account, location permission or paid API is needed. Choose a U.S. time zone, select a date and choose the relevant service. The first answer includes a status label, a short explanation and a source link. Scope and exceptions remain one step away.