National Almond Buttercrunch Day is observed in the USA every year on June 29. This day celebrates almond buttercrunch, a candy that became popular during World War II when it was shipped to American soldiers overseas, leading to its international acclaim. The candy was developed by the candy company Brown & Haley, which named it Almond Roca, reflecting the Spanish origins of the almonds used in production. The term "roca," meaning "stone" in Spanish, describes the candy's hard and crunchy texture. To maintain its freshness, J.C. Haley, a co-founder of Brown & Haley, discovered that storing the candies in tins or airtight containers was effective. This holiday highlights the enjoyment of this sweet treat and its historical significance.