Time’s running out for mailing Christmas presents to loved ones, and Clarkston Post Office is stepping up to help.

Clarkston Postal Store will be open on Sunday, Dec. 17, from 10 a.m.-3 p.m., kicking off what the Postal Service predicts will be the busiest mailing, shipping, and delivery week of the season.

To deliver by Christmas, suggested mail-by dates include Dec. 14 for USPS Retail Ground; Dec. 16, First Class Packages up to 15.99 ounces; Dec. 19, First Class Mail, including greeting cards; Dec. 20, Priority Mail; and Dec. 22, Priority Mail Express.

Visit usps.com/holidaynews to get the full list of deadlines, pricing and shipping tips.