The Millennium Stadium is looking busy.

BBC Scrum V just sent across this picture they took when the teams lined-up before kick-off, and you'd have to say that this is an impressive turn-out for the Pro12.

Rhys Webb works some magic down the blindside and then some quick ball in midfield sets up a promising attack.

But again the Blues take full advantage of loose play at the breakdown and hack the ball 50 yards down the field where they earn the put-in at a scrum.

Dan Baker is over in the corner for the Ospreys - but Nigel Owens wants to know if there's a knock-on. And Josh Matavesi's tiny nudge is enough to wipe-out the score.

Blues number eight Josh Navidi ends another stuttering Ospreys attack as he turns-over Lloyd Peers in the shadow his own posts.

After awarding a penalty to Cardiff Blues after the first scrum, referee Nigel Owens issues clear instruction to Ospreys captain Alun Wyn Jones.

"Scrummage square - end of conversation!"

They know where they stand now!

In tandem with BBC Scrum V, we want to know what you are doing on Judgement Day.

Tom in Cardiff: In the stadium where every regional rugby fan should be for £10! Just need the sun to stick around.

Kieran in Bridgend: I'm going to watch Nantymoel in their final league game, where a win will see them win the league.

BBC Wales presenter Wynne Evans: Off to Bargoed RFC to make a piece for BBC Scrum V - it's going to be a good day!

Karl in Cardiff: Stuck in a wedding on Judgement Day, so having to sneakingly listen to the Ospreys game on a hidden earphone. Come on guys!

A hidden earphone? Karl is getting a bit Mission Impossible on us. May we suggest you simply glance at your phone every now and again to follow the text on the mobile site or app?

Also, we're not convinced that 'sneakingly' is a word. Keep your tweets coming in by using #ScrumV or email: scrumv@bbc.co.uk

And the Blues' early endeavour is rewarded when they earn a penalty from the resulting line-out and Gareth Anscombe is again on target with the kick. The score takes Anscombe past 50 points for the Blues in his first season in Welsh rugby.

Jonathan Davies
Former Wales fly-half on Twitter

"Two great games, I hope they match the occasion. Blues to play with pride, Dragons to bounce back after Europe experience.

"But Ospreys to win and try for a home semi-final. Scarlets to win to try and get 6th place."

Ospreys make a hash of a midfield move and lose 90 metres.

Tommy Isaacs saves a certain try as Ospreys catch Blues napping from the re-start. Eli Walker was odds-on to score after Ben John's superb take and pass. But Isaacs had other ideas. Pressure is still on though.

It's all Cardiff Blues in the early exchanges and eventually the Ospreys concede a penalty and fly-half Gareth Anscombe kicks the points from 20 metres.

Ospreys' Wales scrum-half Rhys Webb makes a hash of gathering a kick to give Blues an attacking line-out.

More early Blues pressure but Lucas Amorosino passes the ball straight into touch as the Ospreys' well-organised defence holds firm.

The Blues make a good start but Rhys Patchell's kick is easy for the Ospreys to deal with.

Image source, Huw Evans agency

Ospreys wing Eli Walker is one of the great talents of the Welsh domestic game but has yet to make the breakthrough into the international ranks because of a series of badly-timed injuries.

He was due to play for Wales against South Africa in November 2013 before a hamstring injury ruled him out of the game.

We talked to the player who comes from a sporting family during the build-up to today's big game in Cardiff.

"I'm sick to death of talking about injuries," said Walker.

.... and after a minute's silence to mark Anzac Day and the 100th anniversary of the Battle of Gallipoli, we're ready for the kick-off.

The Blues and the Ospreys don't run out of the tunnel as they normally would, but down the steps through the media box because two sets of dressing rooms are being used.

In tandem with BBC Scrum V, we want to know what you are doing on Judgement Day.

Adam in Cardiff: Beddau RFC have a huge game vs Ystrad RFC... 80 mins to decide the title!!

Sarah in Oakdale: Off to Judgement Day with some of the Bargoed under-12's. Bargoed 1st team have a big game today where they will receive the Championship Cup.

Kate in Pontypridd: I'll be watching Bridgend Ravens play their last league game before the SWALEC final next week!

Rich in Cardiff: Only one place I'll be & that's at the Millennium Stadium for Judgement Day!

Looks like Rich is going to be on his own in the Millennium Stadium, judging by this lot...

Cardiff Blues: Rhys Patchell; Lucas Amorosino, Tom Isaacs, Garyn Smith, Joaquin Tuculet, Gareth Anscombe, Lloyd Williams; Gethin Jenkins (capt), Kristian Dacey, Craig Mitchell, Chris Dicomidis, Filo Paulo, Josh Turnbull, Sam Warburton, Josh Navidi.

Replacements: Matthew Rees, Sam Hobbs, Scott Andrews, Jarrad Hoeata, Macauley Cook, Lewis Jones, Gareth Davies, Dan Fish.

Ospreys: Dan Evans; Tom Grabham, Ben John, Josh Matavesi, Eli Walker; Dan Biggar, Rhys Webb; Nicky Smith, Scott Baldwin, Aaron Jarvis, Lloyd Peers, Alun Wyn Jones (capt), Dan Lydiate, Justin Tipuric, Dan Baker.

Replacements: Sam Parry, Marc Thomas, Dmitri Arhip, Tyler Ardron, James King, Tom Habberfield, Sam Davies, Jonathan Spratt.

Referee: Nigel Owens (WRU)

Assistant referees: Rhys Thomas, Gwyn Morris (both WRU)

Citing Commissioner: Dennis Jones (WRU)

TMO: Gareth Simmonds (WRU)

Image source, Huw Evans Agency

Prop Craig Mitchell will make his first Cardiff Blues Pro12 start since November when they face.

Mitchell's fellow former Osprey Adam Jones is left out of the match-day squad as Scott Andrews drops to the bench in a side showing nine changes.

Ben John comes in at centre as Ospreys make three starting changes.

Nicky Smith opposes Mitchell at prop and Lloyd Peers returns at lock.