Throughout May, which is National Hamburger Month, White Castle will host a "Slider-bration" by offering its signature burger for 25 cents.

During the entire month, 24 hours a day and seven days a week, a different White Castle around the country will be hosting the promotion for two hours. When Sliders are discounted to 25 cents during that time, each guest can order up to 10.

Most White Castle restaurants will host at least one two-hour "Slider-bration." The promotion begins at 12:01 a.m. on May 1 with a kickoff event in Columbus, Ohio. Another Slider-bration will kick off every two hours in May at different White Castle locations throughout the Midwest and Northeast. was created for the occasion, and will include a countdown clock for all events happening within the subsequent 24 hours. For fans who want to plan further ahead, they can sign up for email alerts 48 hours before the event happens at their local restaurant.

White Castle created National Hamburger Month 22 years ago.

"This is an exciting event for our legion of Cravers," said Jamie Richardson, vice president of White Castle. "We are thrilled that Slider-bration offers our loyal customers a chance to share a memorable moment with family and friends."

Read more about marketing and promotions.

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