I think there is no built-in blueprint, but engine have in C++ side: .unrealengine.com/latest/INT/API/Runtime/Core/Misc/FDateTime/Now/index.html
If you want venture on creating custom Blueprint for , they have a how-to on Wiki xD: A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums
Also have somewhere a guide of how to create Blueprints as a plugin so you can distribute them and users don’t have to recompile whole engine source code. I didn’t mess around with that yet.