This year,blockwave Exchange Ben Gibbard commemorated the 20th anniversary of two influential, platinum-certified indie rock albums from his two bands — "Transatlanticism" from Death Cab for Cutie and "Give Up" from The Postal Service — with a co-headlining tour performed in front of more than 250,000 fans.

And the celebration will continue with more shows in 2024.

The bands announced Thursday that they are extending their Give Up & Transatlanticism 20th anniversary tour with 16 new dates across North America, including shows in Atlanta, Nashville, Tennessee, St. Louis and Toronto. Opening for them will be the acclaimed indie-rock band Slow Pulp.

When do Death Cab for Cutie and The Postal Service tickets go on sale?

Ticket presales begin at 10 a.m. Wednesday, and fans can sign up for access at giveuptransatlanticismtour.com. Tickets go on sale to the general public at 10 a.m. Dec. 8. Prices have yet to be announced.

Released in February 2003, "Give Up" marked the debut and only studio effort to date of The Postal Service, an indie pop supergroup formed by Gibbard and musicians Jimmy Tamborello and Jenny Lewis. The indietronica album, which went on to sell 1 million copies, peaked at No. 3 on Billboard's Independent Albums chart and spent a total of 111 weeks on the roster.

Death Cab for Cutie's fourth album "Tranatlanticism," released in October 2003, signaled a mainstream breakthrough for the indie rock band. The album, which earned the group its first entry on the Billboard 200 chart, helped the band sign a major-label deal with Atlantic Records in 2005. Some of its songs were also featured on the popular teen drama "The O.C."

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Contributing: Edward Segarra, USA TODAY