The LIRR will run on a Sunday schedule Thursday.

The LIRR will run on a Sunday schedule Thursday. Credit: Charles Eckert

Christmas Day, which is a federal holiday, resulting in closings of the big and small on Thursday.

Still, some retailers are open, if only with shortened hours. In general, major grocery and big-box stores are closed, but those in need of a coffee from Dunkin' or a candy fix from 7-Eleven should call first before venturing out.

Here's what's open and closed:

Government buildings

All county, state and federal administrative buildings across New York State, including courts and the district attorney’s offices, are closed. Courts are only open for arraignments. Emergency services will be working around the clock, however.

Schools

All public schools on Long Island are closed, and virtually all are on holiday break through the New Year.

Banks and markets

All banks are closed, as they are on all federal holidays. The New York Stock Exchange, Nasdaq and the bond markets are closed as well. 

Mail

The United States Postal Service is closed. No regular mail will be delivered.

Major retailers

Major retailers, including Walmart, Target and Costco will be closed. But some major drugstore chains will be open, with limited hours, including CVS and Walmart. Their pharmacies will be closed, however.

Major fast-food chains and some restaurants will be open, McDonald’s, Burger King and Wendy’s will have many of their stores open. Many Long Island Dunkin' and Starbucks stores will be open on limited hours. 7-Elevens and many other convenience stores and gas stations will be open.

Generally, supermarkets will be closed.

LIRR

The Long Island Rail Road will operate on a Sunday schedule on Thursday and resume a normal schedule Friday.

Get the latest news and more great videos at NewsdayTV Credit: Newsday

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Christmas lights for cancer patients ... WWII vet to play anthem at UBS ... Whats up on LI ... Get the latest news and more great videos at NewsdayTV

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