Sundays@Space has quite a few residents; Tania Vulcano (who is also a resident at Circo Loco@DC10), Bobby d Ambrosio who starts proceedings every week with his Def Mix, Jose de Divinia, David Moreno...They all tend to play in the late morning to mid afternoon.
For all of them, check off
www.space-ibiza.com
When I went, I got there for about early afternoon, although it really depends who you want to see. Obviously the bigger names will be on later. If you get a pass-out, you can leave once and come back later which is pretty good, although it does mean you'll be paying top whack.
The problem with staying for hours and hours is that you'll end up spending a fortune at the bar, even if you're just drinking water or soft drinks as it's so expensive over there. I spoke to people last year who stayed there nearly all day and spend nearly £150 each at the bar.
Circo Loco at DC10 doesn't commence until Space finishes and personally, I prefer to head back for some kip as I stay on that side of the island anyway, before venturing out, although I'm sure that makes me a pussy! I tend to head to DC10 for about midday on the Monday as I think this is when it's starting to get the most kicking.