More people than ever are drinking coffee, even as the average cost of a cup of coffee has risen by more than 20% just in the last year alone.

But on National Coffee Day, you'll be able to buck that trend and get coffee and donuts for free, if you know where to look.

Here's everything you need to know about National Coffee Day.

When is National Coffee Day?

National Coffee Day is Monday, Sept. 29.

Get free coffee, donuts from Krispy Kreme on National Coffee Day

You can get free coffee and donuts from Krispy Kreme on Monday, Sept. 29.

Krispy Kreme is starting its National Coffee Day promotion on Saturday, Sept. 27.

"This Saturday and through National Coffee Day, Krispy Kreme is offering an Original Glazed dozen for just $1 with the purchase of any dozen at regular price,"

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