Only just noticed this the last day or so but cant seem to find anything about the promo and when it will end?

It is a flash deal. The timer is on the front pages. It ends in under 10 hours.

Mine says 18 hours.

Different time zones?

For me it's 10 minutes left.

The sale should end at the same time though, right?

That's why I wrote this yesterday:
https://www.gog.com/forum/general/i_wish_games_would_tell_you_how_long_they_would_be_on_sale_for/post9

Edit
Quote: "And since we all know by now, that sometimes that countdown is not 100% correct, we can simply adapt to that small problem, by making our purchases roughly 12 hours prior to the proposed end of a sale."

Edit 2: paladin - you're sure that it's hours for you, and not also minutes?

Have another look. Is it still 18 hours? The time you posted was about right for 18 minutes to the standard flash deal changeover.

OMG. I'm dumb! Thanks:P