There is an annual break from government and factory work which begins before Christmas and lasts for 3 weeks. Break-Up Day is usually marked with parties at various work "departments". Break-Up includes the Island Store, which means that families must be organised to have a full larder of provisions during the period. In 2013, the Island Store closed a week earlier than usual to conduct a comprehensive inventory, and all purchases had to be made by Friday 13 December as the shop did not open again until a month later.
Which day is usually marked with parties at various Island Stores?