What's open and closed on Memorial Day in Massachusetts

Memorial Day honors the sacrifice of military service members who died in duty. It falls on May 26 this year.

Volunteers will plant more than 37,000 American flags at the Soldiers and Sailors Monument on Boston Common in tribute to every fallen service member from Massachusetts since the Revolutionary War.

And while Boston doesn't hold a city-wide parade, neighboring Somerville holds one that will kick off at 11 a.m. in Davis Square on Sunday.

The day is also known as the unofficial start of summer. Along with the early season cookouts, Boston Calling will take over the Harvard Athletic complex in Allston, setting off summer concert season.

Whether you're headed to a parade or chowing down at a summer kickoff barbecue, here are the key closures to note:

Federal offices: Closed.

Federal courts: Closed.

Post offices: Closed.

State offices: Closed.

RMV: Closed.

State courts: Closed.

Municipal offices: Closed.

Public schools: Closed.

Libraries: Closed.

Trash pickup: Check with your local government or provider. Boston residents can check for pickup delays by searching their address here.

Banks: Closed.

Stock market: Closed.

Retail locations: Open.

Liquor stores: Open after 12 p.m.

Supermarkets: Open.

MBTA: The subway and bus will run on a Sunday schedule. The RIDE will operate on a Saturday schedule. Commuter Rail will run on a weekend schedule.

There will be no service on the Hingham to Boston and Winthrop ferries. The Hingham/Hull/Logan will run on a Sunday schedule. The East Boston, Charlestown and Lynn will run on a weekend schedule.

The Charlie Service Center is closed.