The three-day weekend means an extra day off from work for many across the city, but it also means an extra day of weekend service changes on the rails.

Here are the service changes slated for Saturday, Sunday and Monday.

No. 2 trains, all weekend

There will be no service between East 180th Street and Dyre Avenue in both directions.

No. 4 train, 10 a.m. to 7 p.m., Monday

The Utica Avenue stairways will be entrance-only due to local events.

The Schenectady Avenue stairways will be exit-only due to local events.

Noon to 7 p.m., Monday

The Eastern Parkway station will be closed due to local events.

No. 5 train, all weekend

There are no trains between Nereid Avenue and 241st Street.

6 a.m. to 8 a.m., Monday

The Church Avenue station will be closed due to local events.

Noon to 7 p.m., Monday

The Eastern Parkway station will be closed due to local events.

A train, all weekend

Ozone Park/Far Rockaway-bound trains will skip 116th, 110th, 103rd, 96th, 86th, 81st and 72nd streets.

Ozone Park/Far Rockaway-bound trains will also skip 50th, 23rd and Spring streets.

C trains, all weekend

Euclid Avenue-bound trains will skip 116th, 110th, 103rd, 96th, 86th, 81st and 72nd streets.

Euclid Avenue-bound trains will also skip 50th, 23rd and Spring streets.

B trains, all weekend

The B does not run on weekends or holidays.

D trains, all weekend

Coney Island-bound trains will skip 182nd-183rd streets.

Norwood-bound trains will skip 25th Street, 4th Avenue-9th Street and Union Street.

F trains, all weekend

Coney Island-bound trains run via the E line from Roosevelt Avenue to Canal Street, and via the A line to Jay Street-MetroTech.

Jamaica-bound trains will run local from 21st Street-Queensbridge to Roosevelt Avenue.

Jamaica-bound trains will also run local from Roosevelt Avenue to 71st Avenue.

M trains, Saturday through April 2018

Beginning Saturday, there will be no M train service between Myrtle-Wyckoff Avenues and Myrtle Avenue (Broadway) until April 30, 2018.

N trains, all weekend

Coney Island-bound trains will skip 49th, 28th, 23rd, 8th and Prince Streets.

Manhattan-bound trains will run express from 59th Street in Brooklyn to Atlantic Avenue-Barclays Center.

Trains will not run between Queensboro Plaza and Ditmars Boulevard.

Q trains, all weekend

Coney Island-bound trains will skip 49th, 28th, 23rd, 8th and Prince Streets.

R trains, all weekend

Manhattan-bound trains will run express from 59th Street in Brooklyn to Atlantic Avenue-Barclays Center.

W trains, all weekend

The W does not run on weekends and holidays.

G trains, all weekend

There will be no trains between the Hoyt-Schermerhorn and Church Avenue stations.