12 hours of shade do to my plant?

My plant is still vegging but I need to move it in the shade because I have people coming over will this hurt my plant at all?

How old is the plant?
If it is a seedling or very young then you should try to consider another option.
If it is a more established plant then I don't believe 12 hours of shade will really harm it much, it probably will stress the plant some and you will have to react to the way your plant reacts, but I don't believe it would do any irreparable damage.
By "established" I'm thinking something along the lines of 9" tall.

No its not gonna hurt it just move it back where it was ASAP.