{"product_id":"calendar-humanitys-epic-struggle-to-determine-a-true-and-accurate-year","title":"Calendar:: Humanity's Epic Struggle to Determine a True and Accurate Year","description":"Duncan leads readers on an extraordinary journey through man's reckoning of time, from the earliest calendars to today's atomic clocks, in a book that answers--and raises--a host of fascinating questions about the nature of human timekeeping.","brand":"Harper Perennial","offers":[{"title":"Default Title","offer_id":51984279437543,"sku":"9780380793242","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0449\/4075\/5096\/files\/imageloader_73e0bc6a-4f7a-49b1-86d5-4357b1d63466.jpg?v=1776315725","url":"https:\/\/arvidabookco.com\/products\/calendar-humanitys-epic-struggle-to-determine-a-true-and-accurate-year","provider":"Arvida Book Co.","version":"1.0","type":"link"}