{"product_id":"13-month-calendar-international-fixed-calendar-cotsworth-calendar-explained-433884585","title":"13 Month Calendar – International Fixed Calendar, Cotsworth Calendar Explained","description":"\u003cp\u003eDiscover an alternative way of measuring time with the 13 Month Calendar, based on the International Fixed Calendar.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe International Fixed Calendar was a proposed reform of the Gregorian calendar, designed by Moses B. Cotsworth and first introduced in 1902. It is also known as the Cotsworth Plan, Cotsworth Calendar, Eastman Plan, or Yearal.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis calendar divides the year into 13 equal months, each consisting of 28 days. Every month contains exactly four weeks, creating a perfectly balanced and predictable system where the same dates always fall on the same weekdays.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHow the 13 Month Calendar Works:\u003c\/p\u003e\u003cp\u003e• 13 months per year\u003c\/p\u003e\u003cp\u003e• 28 days in each month\u003c\/p\u003e\u003cp\u003e• 4 weeks per month\u003c\/p\u003e\u003cp\u003e• Total of 364 days\u003c\/p\u003e\u003cp\u003e• One additional “Year Day” outside the weekly cycle\u003c\/p\u003e\u003cp\u003e• Leap years include an extra leap day\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe extra month is traditionally called Sol and is placed between June and July.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMaterials: birch plywood 3 mm\u003c\/p\u003e\u003cp\u003eColors:  rosewood, old oak\u003c\/p\u003e\u003cp\u003eDimensions: M - 30\u0026amp;khcy;22,5 \u0026amp;scy;m\/ 11.8x8.7\";  L - 30\u0026amp;khcy;40 \u0026amp;scy;m\/ 11.8x15.8\"\u003c\/p\u003e\u003cp\u003ePersonalization on the back side at the bottom right\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eWhy This Calendar Is Unique:\u003c\/p\u003e\u003cp\u003e• Perfect monthly symmetry\u003c\/p\u003e\u003cp\u003e• Consistent weekly structure\u003c\/p\u003e\u003cp\u003e• No shifting weekdays from year to year\u003c\/p\u003e\u003cp\u003e• Historically proposed as a global calendar reform\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePerfect For:\u003c\/p\u003e\u003cp\u003e• Calendar and history enthusiasts\u003c\/p\u003e\u003cp\u003e• Educational displays and learning spaces\u003c\/p\u003e\u003cp\u003e• Office, study, or library décor\u003c\/p\u003e\u003cp\u003e• Unique gifts for thinkers and planners\u003c\/p\u003e\u003cp\u003e• Conversation-starting wall art\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e📌 This calendar is presented for educational and decorative purposes. It is not an official calendar system in modern use.\u003c\/p\u003e","brand":"Esoteric Wings","offers":[{"title":"M with pers \/ Rosewood","offer_id":52798329848119,"sku":"143-2","price":42.0,"currency_code":"USD","in_stock":true},{"title":"M with pers \/ Old oak","offer_id":52798329880887,"sku":"143-2","price":42.0,"currency_code":"USD","in_stock":true},{"title":"M without pers \/ Rosewood","offer_id":52798329913655,"sku":"143-2","price":32.0,"currency_code":"USD","in_stock":true},{"title":"M without pers \/ Old oak","offer_id":52798329946423,"sku":"143-2","price":32.0,"currency_code":"USD","in_stock":true},{"title":"L with pers \/ Rosewood","offer_id":52798329979191,"sku":"143-2","price":58.0,"currency_code":"USD","in_stock":true},{"title":"L with pers \/ Old oak","offer_id":52798330011959,"sku":"143-2","price":58.0,"currency_code":"USD","in_stock":true},{"title":"L without pers \/ Rosewood","offer_id":52798330044727,"sku":"143-2","price":48.0,"currency_code":"USD","in_stock":true},{"title":"L without pers \/ Old oak","offer_id":52798330077495,"sku":"143-2","price":48.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/3549\/0359\/files\/650e9e62-f236-4c8b-8de8-7d91b6e41eda-copy.jpg?v=1786080684","url":"https:\/\/esotericwings.com\/products\/13-month-calendar-international-fixed-calendar-cotsworth-calendar-explained-433884585","provider":"Esoteric Wings","version":"1.0","type":"link"}