*Valid September 30, 2024 - December 25, 2024 at Canadian stores and at indigo.ca, while quantities last, with $50.00 or more pre-tax purchase of eligible product(s), after discounts and plum points redemptions. Minimum purchase amount excludes gift cards, plum+ memberships, Love of Reading products/donations, and shipping costs. Selection may vary between stores and online.
Calendrical Calculations: The Ultimate Edition/en-ca/calendrical-calculations-the-ultimate-edition/2F96355A-7FBB-401A-A061-276B9A8E1204.html2F96355A-7FBB-401A-A061-276B9A8E1204