What length of time should I leave my concrete

[Nathandavid]

Hi all!
I've recently ripped up the slabs in my open fronted porch. I've put down a dpm and laid my concrete at 100mm. I'm in need of applying self leveler ready for the tiles which isn't a problem being a tiler I've done this many times however never laid concrete and I'm unsure of the curing time some conflicting information out there.
Any info would be much appreciated

 

[Notch7]

My guess would be lay a square of plastic down overnight - if you lift it and there’s a wet square….it’s still too wet.