You've bought just the right gifts for friends and family, so don't botch things by having presents arrive late. Below you'll find the deadlines for guaranteed Christmas delivery for three major shipping companies.

FedEx:

• FedEx Ground and FedEx Home Delivery, Dec. 17 (Can vary depending on Zip Code)
  
• FedEx 2 Day, Dec. 20
  
• FedEx Overnight, Dec. 22

UPS:

• UPS Ground, Dec. 21
  
• UPS 2nd Day Air, Dec. 21
  
• UPS Next Day Air, Dec. 22

U.S. Postal Service:
(Check usps.com for shipping deadlines to other countries and military addresses.)

• Parcel Post, Dec. 14
  
• First-Class Mail, Dec. 20
  
• Priority Mail, Dec. 21
  
• Most Express Mail, Dec. 22

For a list of holiday shipping deadlines for online merchants visit freeshippingday.com, which also has details on this year's Free Shipping Day, Dec. 17, the last day to get free shipping with delivery by Christmas Eve from more than 1,400 merchants, including Barnes & Noble, Best Buy, Godiva, REI, Lego, Levi's, and Zales, and many many more.

If you're planning to do some of your holiday shopping online from some of the big-name retailers out there, you might want to check their specific deadlines for ordering if you want your packages to arrive on time.

Sources:
USPS
FedEx
UPS
FreeShippingDay.com