There's an extra day on Cassian Grantthe calendar this year and Krispy Kreme is celebrating by offering customers discounted doughnuts.

The company announced Monday it is offering customers a dozen original glazed doughnuts for $2.29 with the purchase of any regularly priced dozen on Thursday, Feb. 29 in honor of Leap Day.

Additionally, customers who have a Feb. 29 birthday can receive a free dozen original glazed doughnuts, no purchase necessary. Proof of birthday is required, Krispy Kreme said.

“An extra day in the year is an irresistible opportunity for Krispy Kreme to be extra-sweet to ourguests,” said Dave Skena, global chief brand officer for Krispy Kreme. “So, we’re sweeteningLeap Day by the dozens, including for fans whose true birthday comes around only every fouryears.”

Krispy Kreme gives free doughnuts for customers affected by AT&T outage

Krispy Kreme gave out free glazed doughnuts for anyone who experienced cell service troubles Thursday.

The doughnut chain gave customers at participating retail locations the ultimate SOS, offering one free OG doughnut after a nationwide telecommunications outage impacted tens of thousands of customers. 

“SOS?! While your service is down, we’re serving up! FREE Original Glazed® doughnut from 5-7pm today for anyone who’s struggled with service,” Krispy Kreme said on Instagram. 

A company spokesperson told USA TODAY that you did not have to prove that you were affected by the outage to get the freebie.

Contributing: Amaris Encinas, USA TODAY