Half-Price Shakes at Sonic All Day on 12/22/14

Sonic is once again celebrating the Winter Solstice (AKA the shortest day of the year) by offering half-price shakes all day on Monday, December 22, 2014 (never mind that the Winter Solstice falls on December 21).

The half-price shake deal had been an annual tradition, which they also repeat it during the Summer Solstice (AKA the longest day of the year).

Regardless of whether it's hot or cold out, the deal's always for ice cold shakes.

Sonic shakes start at around $2.29 for a mini cup so you can score a shake on Monday for $1.15 and up.