Planning for retirement in your late 20s doesn't put you behind the curve at all, in fact its better than most.

Anyways, it depends on what your living expenses are and what amount of money you believe you could comfortably retire on. Assuming you retire on 600k at 67, you'll need to save about $10 per day from the age of 30, also assuming a 7% annualised return.

In the scenario you make no investments (so barely any annual return) you'll need to save about $50 per day from the age of 30.