UK based boyband One Direction have treated fans to new details about their upcoming worldwide event, ‘1D Day'.

This coming Saturday, November 23, the heartthrobs will host a seven-hour live broadcast 7pm – 2am (GMT) and plan to let their devoted followers into their world in a completely new way.

The broadcast will be available through both YouTube & Google+, allowing Directioners multiple platforms through which to access the exclusive content. The official press release for '1D Day' states that fans can expect "behind the scenes footage, exclusive plays of tracks from their new album 'Midnight Memories', Guinness World record attempts, and amazing special guests including Robbie Williams, Celine Dion, Simon Cowell, Piers Morgan, The Muppets and many more."

Band member Liam Payne revealed what the event is all about: "1D Day is all about giving back to our amazing fans for supporting us for the past three years. When we suggested it we never thought anyone would let us loose LIVE all day – we cannot wait!"

Fans will be able to interact by using a specially created hashtag (#1DDayLive) and might even be surprised by one of the 'Best Song Ever' heartthrobs as they join Google+ hangouts for 'One Big Drop In' to chat face to face with a few lucky individuals.