SHARE Queen Elizabeth II is scheduled to make a television appearance just hours before Prince Harry and Meghan Markle's Oprah Winfrey interview is aired on US TV. The 90-minute "tell-all" special with the couple is set to air on Sunday, March 7, at 8pm EST (Monday, March 8 at 5am GST). A matter of hours before, the monarch will appear on British TV to give her Commonwealth Day address. In 2021, the annual celebration of the Commonwealth of Nations falls on Monday, March 8. Typically, the Commonwealth Day service is held at Westminster Abbey, however this year measures to curb the spread of Covid-19 mean the church service has been cancelled and replaced with the BBC special.