Haggleday constituted an annual celebration for the Squib species, taking place each year. This holiday was marked by extensive celebration and negotiation. Squib children, called fuzzlings, would grow intensely thrilled on the morning Haggleday arrived. The sheer number of droids within a concealed section of a Jawa sandcrawler reminded the Squib merchant Macemillian-winduarté of being a fuzzling on Haggleday, even with the machines being broken, when he entered it in 0 BBY.
The short story "Spare Parts," written by Pablo Hidalgo, contained the initial reference to Haggleday. It appeared in the eleventh issue of the Star Wars Adventure Journal magazine, released in November of 1996.