You can tell that there is a match of great importance on the way for any number of reasons.
One of them could be that people have been talking about Juve and Bayern Munich ever since the first leg - a 2-2 at Juventus Stadium in case you missed it - and can think of nothing else.
Or maybe it is the fact that we welcomed a giant bear to Turin three weeks ago and we'll be sending an equally giant zebra back to soak up the atmosphere in Germany ahead of kick-off.
Let's not forget that the world's attention will be intensely focused on the Bianconeri and Bayern camps, remarking on every movement and every scrap of news to emerge from both sides.
The standout piece of evidence that tomorrow's encounter at the Allianz Arena is indeed one of the most important of the season is in fact this liveblog!
You see, it just wouldn't be a big European night without one and for the next 36 hours, this is the place to be for all the build-up, tactical chat and social media highlights ahead of Wednesday's showdown.
As ever though, the liveblog is as much yours as ours.
To have your say on the action, whether it be a score predicition, a pre-match selfie or a message of support for our boys in black and white, we'll have our eyes peeled for all your finest work on Twitter, Facebook and Instagram on the hashtags #BeHeroes and #FCBJuve.
So, without further ado, let the games begin!