Seriously though, I personally haven't seen anywhere that lets you rotate the budget according to time. Maybe if you qualify for an AdRep this would be something they could do. Or, give G a call and ask them what they suggest. Their number is a little hard to find, so if you need it, shoot me a sticky.
...Or, give G a call and ask them what they suggest.
At present, there isn't a way to do this automatically from within your account. It's really a matter of manually changing your budget to conform with your wishes.
This can be rather quickly done, at the campaign level - but do be mindful of the server delays involved with each change.
This has come up a time or two as a desired feature, as many on this Forum will know - and I'll certainly continue to pass along this feedback each week.
AWA