We Have Some Unfortunate News About Tonight's Penn Station Rush Hour Service...

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It's déjà vu all over again: the Long Island Railroad has issued a service advisory to commuters planning on taking LIRR trains out of Penn Station this evening, warning that 26 rush hour trains have been cancelled or diverted. This all comes as a result of continued work to repair tracks after Monday morning's NJ Transit derailment in Penn Station.

"Amtrak has advised us that the repairs to damaged track will take a matter of days, unfortunately," LIRR President Patrick Nowakowski said in a statement. "Because of that, we must continue to operate on a reduced schedule until all repairs have been safely completed. We have offered support and any assistance they need to help speed these repairs."

There will be no westbound service between Jamaica and Penn Station from 4 p.m. to 8 p.m. Customers will be able to transfer to the E subway for continuing service to Penn Station. New York City Transit will cross-honor LIRR tickets at Woodside and Jamaica.

From 6 p.m. to 8 p.m., westbound Port Washington Branch trains will terminate at Woodside, where customers will be able to transfer to the 7 Subway subway for continued service to Manhattan.

As with yesterday, service is expected to operate normally in and out of Atlantic Terminal, Brooklyn, and Hunterspoint Avenue, Queens. New York City Transit will cross-honor LIRR tickets at 34th Street-Penn Station on the 1/2/3 and A/C/E lines. Also, NJTransit (both Northeast Corridor and North Jersey Coast Line trains) will be operating on a holiday schedule.

Altogether, LIRR 18 trains have been cancelled from Penn Station between 4 p.m. and 8 p.m., and eight others diverted to originate elsewhere. LIRR will primarily operate out of Tracks 17 through 21 as a result of the post-derailment track work. Now, take a deep breath, then check out all the changes below:

Babylon Branch

The 4:03 p.m. train from Penn Station due Babylon at 5:05 p.m. has been cancelled. Customers can take the 4:12 p.m. train from Penn Station due Massapequa Park at 5:10 p.m. with stops at Woodside, Forest Hills, Kew Gardens, Jamaica, Rockville Centre, and all further stops to Babylon.

The 4:34 p.m. train from Penn Station due Babylon at 5:39 p.m. has been cancelled. Customers can take the 4:37 p.m. train from Penn Station due Wantagh at 5:27 p.m. with stops at Rockville Centre, and all further stops to Babylon.

The 4:57 p.m. train from Penn Station due Wantagh at 5:42 p.m. has been cancelled. Customers can take the 5:03 p.m. train from Penn Station due Freeport at 5:46 p.m. with stops at Rockville Centre, Baldwin, Freeport, Merrick, Bellmore and Wantagh.

The 5:19 p.m. train from Penn Station due Wantagh at 6:06 p.m. has been cancelled. Customers can take the 5:24 p.m. train from Penn Station due Freeport at 6:10 p.m. with stops at Forest Hills, Kew Gardens, Jamaica, Rockville Centre, and all further stops to Wantagh.

The 5:40 p.m. train from Penn Station due Seaford at 6:30 p.m. has been cancelled. Customers can take the 5:47 p.m. train from Penn Station due Freeport at 6:31 p.m. with a stop at Rockville Centre, and all further stops to Seaford.

The 6:05 p.m. train from Penn Station due Wantagh at 6:51 p.m. has been cancelled. Customers can take the 6:10 p.m. train from Penn Station due Freeport at 6:54 p.m. with a stop at Rockville Centre, and all further stops to Wantagh.

The 6:33 p.m. train from Penn Station due Babylon at 7:35 p.m. has been cancelled. Customers can take the 6:36 p.m. train from Penn Station due Wantagh at 7:29 p.m. with stops at Jamaica, St. Albans, Rockville Centre, and all further stops to Babylon.

Far Rockaway Branch
The 4:42 p.m. train from Penn Station, due into Far Rockaway at 5:40 p.m., will originate at Atlantic Terminal, Brooklyn.

The 5:32 p.m. train from Penn Station, due into Far Rockaway at 6:24 p.m., will originate at Jamaica.

The 6:02 p.m. train from Penn Station, due into Far Rockaway at 6:58 p.m., will originate at Jamaica.

Hempstead Branch
The 4:32 p.m. train from Penn Station, due into Hempstead at 5:23 p.m., will originate at Atlantic Terminal, Brooklyn.

The 5:04 p.m. train from Penn Station, due into Hempstead at 5:57 p.m., will originate at Jamaica.

The 5:38 p.m. train from Penn Station, due into Hempstead at 6:36 p.m., will originate at Atlantic Terminal, Brooklyn.

The 6:39 p.m. train from Penn Station, due into Hempstead at 7:38 p.m. will originate at Jamaica.

The 7:05 p.m. train from Penn Station, due into Hempstead at 7:56 p.m., will originate at Atlantic Terminal, Brooklyn.

Long Beach Branch
The 4:40 p.m. train from Penn Station due Long Beach at 5:37 p.m. has been cancelled. Customers can take the 5:00 p.m. train from Penn Station due Long Beach at 5:55 p.m. with stops at Jamaica, Locust Manor, and all further stops to Long Beach.

The 5:20 p.m. train from Penn Station due Long Beach at 6:11 p.m. has been cancelled. Customers can take the 5:23 p.m. train from Penn Station due Long Beach at 6:18 p.m. with stops at Jamaica, Locust Manor, Laurelton, Rosedale, Valley Stream, Lynbrook, and all further stops to Long Beach.

Port Jefferson Branch
The 3:27 p.m. train from Penn Station due Huntington at 4:33 p.m. has been cancelled. Customers can take the 3:43 p.m. train from Penn Station due Huntington at 4:49 p.m. with stops at Woodside, Jamaica, New Hyde Park, and all further stops to Huntington.

The 5:06 p.m. train from Penn Station due Huntington at 6:07 p.m. has been cancelled. Customers can take the 5:17 p.m. train from Penn Station, due into Huntington at 6:21 p.m.

The 6:30 p.m. train from Penn Station due Huntington at 7:32 p.m. has been cancelled. Customers can take the 6:35 p.m. train from Penn Station due Hicksville at 7:22 p.m. with stops at Jamaica, New Hyde Park, and all further stops to Huntington.

Port Washington Branch
The 5:11 p.m. train from Penn Station due Port Washington at 5:47 p.m. has been cancelled. Customers can take the 5:14 p.m. train from Penn Station due Great Neck at 5:45 p.m. with a stop at Bayside and all further stops to Port Washington, excluding Mets-Willets Point.

The 5:26 p.m. train from Penn Station due Port Washington at 6:04 p.m. has been cancelled. Customers can take the 5:29 p.m. train from Penn Station due Great Neck at 6:05 p.m. with a stop at Woodside and all further stops to Port Washington, excluding Mets-Willets Point.

The 5:50 p.m. train from Penn Station due Great Neck at 6:19 p.m. has been cancelled. Customers can take the 5:56 p.m. train from Penn Station due Great Neck at 6:31 p.m. with a stop at Woodside, and all further stops to Great Neck, excluding Mets-Willets Point.

The 6:11 p.m. train from Penn Station due Port Washington at 6:48 p.m. has been cancelled. Customers can take the 6:14 p.m. train from Penn Station due Great Neck at 6:49 p.m. with a stop at Woodside, and all further stops to Port Washington, excluding Mets-Willets Point.

The 6:24 p.m. train from Penn Station due Port Washington at 7:04 p.m. has been cancelled. Customers can take the 6:42 p.m. train from Penn Station due Great Neck at 7:17 p.m. with a stop at Woodside, and all further stops to Port Washington, excluding Mets-Willets Point.

The 7:01 p.m. train from Penn Station due Port Washington at 7:36 p.m. has been cancelled. Customers can take the 7:14 p.m. train from Penn Station due Great Neck at 7:48 p.m. with a stop at Woodside, and all further stops to Port Washington, excluding Mets-Willets Point.

For continued updates on the rush hour commute, follow LIRR on Twitter and refresh the MTA website.