Prime Minister Boris Johnson has encouraged members of the public to clap for Captain Sir Tom Moore at 18:00 GMT on Wednesday 03-FEB-2021.
The 100-year-old, who raised almost £33m for NHS charities by walking laps of his garden, died with coronavirus in Bedford Hospital on Tuesday.
Mr Johnson said the clap would also be for "all those health workers for whom he raised money".
He added Capt Sir Tom's life was "a long life lived well".
Meanwhile, dozens of tributes have been left outside his home in Marston Moretaine, Bedfordshire.
Capt Sir Tom tested positive for Covid-19 last week. His family said due to other medication he was receiving for pneumonia, he was unable to be vaccinated.
The Army veteran won the nation's hearts by walking 100 laps of his garden last spring during the first coronavirus lockdown, raising money for NHS Charities Together.
A union jack flies at half mast from the top of Victoria Tower at the Palace of Westminster
He had initially set out to raise £1,000, but he eventually raised £32,794,701 from more than 1.5 million supporters and was knighted by the Queen in July.
The charity said the total would rise to £39m when Gift Aid was taken into account.
A weekly applause for front-line NHS staff and other key workers ran for 10 weeks during the UK's first lockdown.
Queen leads tributes to Captain Sir Tom Moore
How will Captain Tom Moore's millions be spent?
Captain Tom's birthday cards opened by volunteers
Before Prime Minister's Questions earlier, the House of Commons held a one-minute silence in memory of Capt Sir Tom and those who have lost their lives as a result of the pandemic.
Afterwards, Mr Johnson said: "We all now have the opportunity to show our appreciation for [Capt Sir Tom] and all that he stood for and believed in.
"That is why I encourage everyone to join in a national clap for Captain Tom and all those health workers for whom he raised money at 18:00 GMT this evening."
Labour leader Sir Keir Starmer added Capt Sir Tom "embodied the spirit of Britain" and welcomed the announcement.
A silence was also held in the House of Lords. Leading the tribute, the Lord Speaker Lord Fowler said: "His quiet resolve and selfless spirit of public service will never be forgotten.
"As we pause to remember him and his enduring legacy, we also remember all those who have died since the start of the pandemic."
The family of Capt Sir Tom, originally from Keighley in West Yorkshire, said the last year of his life was "nothing short of remarkable".
They added that he had "experienced things he'd only ever dreamed of".
