Half-Price Shakes and Ice Cream Slushes All Day at Sonic on April 13, 2017

Sonic extends their warm weather half-price shakes and ice cream slushes deal to the whole day but only on April 13, 2017 at participating locations.

The deal is typically only available after 8 PM and is meant to run through the end of summer.

There's a limit of five shakes and/or slushes for the all day promotion, while supplies last.

Photo via Sonic.