The Queen will send out a national message tomorrow afternoon at 5pm, the Royal Palace has confirmed.
Her Royal Highness's pre-recorded address will be made just hours before Harry and Meghan's tell-all interview with chat show legend Oprah Winfrey airs in America on CBS.
In a statement, the palace said: "In Her Majesty's annual Commonwealth Day message, the Queen will pay tribute to the way in which communities across the family of nations have come together in response to the pandemic."
A Celebration for Commonwealth Day will be broadcast on BBC One after the Queen's message on Sunday March 7, Birmingham Live reports.
Commonwealth Day (Monday, March 8) is an annual marker that celebrates the union of Commonwealth nations across Africa, Asia, the Caribbean and Americas, the Pacific and Europe
ITV has confirmed it will air Prince Harry and Meghan Markle's confessional interview with Oprah on Monday night, at 8pm.
Oprah has already said that "no subject is off-limits" during the bombshell two-hour special.
The interview is set to allow Meghan and Harry the freedom to "speak your truth".
In teaser clips, Harry hints his biggest fear was "history repeating itself" - with Meghan accusing The Firm of "falsehoods" in an extraordinary accusation.
The Prince of Wales has recorded a message for the BBC One Commonwealth programme addressing "the universal devastation caused by the coronavirus pandemic".
Charles will also celebrate the "critical work" being carried out by nations across the Commonwealth to combat climate change and protect its unique landscapes, marine environments and biodiversity.
