In his third campaign for president, former Vice President Joe Biden -- who found his "comeback kid" moment in South Carolina on this year's primary trail -- will formally accept the Democratic Party's nomination for president in a speech Thursday -- 33 years after he made his first bid for the White House.

Under day four's theme of an "America's Promise," Biden will finally assume center stage at the Chase Center in Delaware -- more than 800 miles away from Milwaukee, where the speech was slated to take place in person before the coronavirus pandemic upended the committee's plans and forced a shift to a mostly virtual format.

Democratic presidential nominee former Vice President Joe Biden celebrates via video feed from Delaware with his wife Dr. Jill Biden and his grandchildren after following roll call on the second night of the 2020 Democratic National Convention.

ABC News Live will kick off primetime coverage each day at 7 p.m. ET on the network's streaming news channel and primetime coverage will air from 10-11 p.m. ET each night of the convention on the ABC Television Network.

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7 p.m. Overview of Thursday's primetime program:

"This Time Next Year"

Remarks - Andrew Yang, American businessman

Introduction - Julia Louis-Dreyfus, American actress

Pledge of Allegiance - Cedric Richmond, Jr., Son of U.S. Rep. Cedric Richmond, D-La.

National Anthem - The Chicks: Natalie Maines, Martie Erwin Maguire and Emily Strayer

Invocation - Sister Simone Campbell, American Roman Catholic religious sister

Remarks - Sen. Chris Coons, D-Del.

Remarks - Atlanta Mayor Keisha Lance Bottoms

A Tribute to John Lewis - directed by Dawn Porter

Performance - John Legend, American singer-songwriter, and Common, American rapper, actor and writer

Remarks - Jon Meacham, American writer and author

Remarks - U.S. Rep Deb Halaand, D-N.M.

Remarks - California Secretary of State Alex Padilla and Michigan Secretary of State Jocelyn Benson

Remarks - Sen. Cory Booker. D-N.J.

"You Built America": A Conversation on the Economy with Biden

Remarks - Former U.S. Surgeon General Dr. Vivek Murthy

Remarks - Sen. Tammy Baldwin, D-Wis.

Televisions at Good City Brewing show footage of Democratic presidential nominee Joe Biden during the Democratic National Convention in Milwaukee, Aug. 19, 2020. The convention, which was expected to draw 50,000 people to Milwaukee, is taking place virtually due to the coronavirus pandemic.

The Biden Plan: Military Families - A video on the Bidens' commitment to military families Remarks - Sen. Tammy Duckworth, D-Ill.

A Tribute to Beau Biden - A video that focuses on the remarkable life and career of Beau Biden

Remarks - Former South Bend, Indiana, Mayor Pete Buttigieg

"United We Stand" - Biden through the eyes of those who ran against him in 2020 -- featuring Sen. Cory Booker, D-N.J., Former South Bend, Indiana, Mayor Pete Buttigieg, Sen. Amy Klobuchar, D-Minn., Former U.S. Rep Beto O'Rourke, D-Texas, Sen. Bernie Sanders, I-Vt. Sen. Elizabeth Warren, D-Mass., and Andrew Yang

Remarks - Former New York City Mayor Mike Bloomberg

The Biden Grandchildren - A video focused on Biden's grandchildren

Remarks - Ashley Biden and Hunter Biden, Biden's children

Biden Introduction - The story of Biden's life, up to this moment

Remarks - Former Vice President Joe Biden, 2020 Democratic nominee for president

7 p.m. Last night for Dems to make their case in primetime

Thursday is the Democrats' last night to make their case in primetime before Republicans take the spotlight next week and President Donald Trump accepts his party's nomination from the White House.

"Being president doesn't change who you are, it reveals who you are," the Democratic National Committee said in a release. "On the final night of the convention, we will hear from those who can speak to Joe Biden's leadership and character. Joe Biden will speak about his vision for uniting America to move us forward out of constant chaos and crisis, and for delivering on that promise for all."

Senator and Democratic vice presidential nominee Kamala Harris and her husband Douglas Emhoff stand on stage with Former Vice President and Democratic presidential candidate Joe Biden and his wife, Dr. Jill Biden at the end of the third day of the Democratic National Convention, being held virtually amid the novel coronavirus pandemic, at the Chase Center in Wilmington, Del., Aug. 19, 2020.

7 p.m. Overview of Thursday night's speakers, performers

Thursday's primetime programming includes speeches from four of Biden's former opponents in the race for the Democratic nomination -- Sen. Cory Booker, D-N.J., former South Bend, Indiana, Mayor Pete Buttigieg, former New York City Mayor Mike Bloomberg and Andrew Yang -- along with two officials who were on his shortlist for running mate: Sen. Tammy Duckworth, D-Ill., and Atlanta Mayor Keisha Lance Bottoms.

While Trump has slammed Democrats this week for airing pre-taped DNC speeches, Biden said he doubts the party will ever return to conventions of the past, deeming the new format provoked by the pandemic landscape "inclusive," "creative" and "a template for the future."

Senator Kamala Harris waves after her acceptance speech delivered for the largely virtual 2020 Democratic National Convention from the Chase Center in Wilmington, Del., Aug. 19, 2020.

Senator Kamala Harris waves after her acceptance speech delivered for the largely virtual 2020 Democratic National Convention from the Chase Center in Wilmington, Del., Aug. 19, 2020.Kevin Lamarque/Reuters

Thursday's lineup of speakers:

Sen. Cory Booker, D-N.J.Former South Bend, Indiana, Mayor Pete Buttigieg California Gov. Gavin NewsomAtlanta, Georgia, Mayor Keisha Lance BottomsSen.Tammy Baldwin, D-Wis.Sen. Tammy Duckworth, D-Ill.Sen. Chris Coons, D-Del. Andrew YangFormer New York City Mayor Mike BloombergFormer Vice President Joe Biden

With performances from:

The ChicksJohn Legend and Common

ABC News' Kendall Karson and John Verhovek contributed to this report.

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