By Louis Ramirez, dealnews Senior Feature Writer It's never too early to start thinking about Christmas, and with just 24 shopping days left 'til the big day, we've examined some important shipping deadlines for 15 of your favorite stores. (We'll update our list as more vendors announce their calendars.) Our list includes dates that are verified by each vendor, although we recommend padding your shipping by a day or two in the event of weather delays. And keep in mind that Christmas falls on a Sunday this year, so you'll want to be extra careful about these deadlines, to avoid paying hefty weekend delivery fees. 2011 Christmas Eve Shipping Deadlines Shipping Method Order Deadline (for Dec. 24 delivery) Free Super Saver shipping Standard shipping Last-minute shipping via Prime December 15 December 19 December 23 Free shipping Next Day December 16 (12 pm) December 20 (11:59 pm) Standard shipping Express December 20 (10:59 am) December 22 (10:59 am) Standard shipping Overnight December 15 (11:59 pm) December 22 (11:59 pm) Standard shipping Next Day December 14 (11:59 pm) December 22 (12 pm) Standard shipping Overnight December 21 (1 pm) December 22 (1 pm) Standard shipping Overnight December 21 (1 pm) December 22 (1 pm) Standard shipping December 12 (7 pm) Free shipping Overnight December 12 December 22 Standard shipping Express December 19 (9 pm) December 21 (12 pm) Standard shipping Overnight December 20 (1:30 pm) December 22 (1:30 pm) Standard shipping Express December 21 (11:59 pm) December 22 (11:59 pm) Standard shipping Express December 15 (2:30 pm) December 22 (2:30 pm) Standard shipping Overnight December 13 (3 pm) December 22 (3 pm) Standard shipping Next Day December 18 (5 pm) December 22 (5 pm) Top page photo credit: Stamps.com An avid gadget lover, Louis Ramirez has covered technology for Gizmodo, CNET, Laptop, and various other publications. Follow him on Twitter at @LouisRamirez. You can also sign up for an email alert for all dealnews features.