Speculative theory
Thirteen Month CalendarAtlas
Conventions & Standards · Timekeeping & calendars
Calendar reform literature has included affirmative discussion of adopting a thirteen-month year structure. Some religious calendar teachings contrast twelve-month and thirteen-month year models and present a thirteen-month pattern as tied to a creation or scriptural calendar.
Open the caseEvidence
11 cited sources · both-sides readings on each item
Amharic Calendar: Living Thirteen Months of Sunshine — NKENNE
nkenne.com · secondary
- Pos A · The NKENNE piece is read as outlining an established Ethiopian structure of twelve thirty-day months plus a brief thirteenth month, treated as conventional cultural reporting already compatible with standard calendrical descriptions in the compared public record.“Twelve months of exactly thirty days each”
- Pos B · The NKENNE piece is read as documenting a living calendar of twelve thirty-day months plus Pagumē as thirteenth month, treated as under-accounted for in mainstream summaries and cited for fuller recognition of this claim set.“they have thirteen months of sunshine”
Thirteen-month calendar by Julia E. Johnsen | Open Library
openlibrary.org · secondary
- Pos A · Skeptical readings treat the Open Library record as a thin bibliographic shell only: a 1929 title entry is cited as showing that a thirteen-month calendar pamphlet existed, yet is read as not by itself enlarging or settling any wider public-claim set until fuller sources are supplied.“An edition of Thirteen-month calendar (1929)”
- Pos B · Affirming readings treat the same Open Library record as under-accounted primary trace: the 1929 Julia E. Johnsen listing is cited as evidence that thirteen-month calendar material entered the public catalog, and is read as warranting deeper sourcing before mainstream summaries are treated as complete.“Thirteen-month calendar by Julia E. Johnsen”
Thirteen-Month Calendar/General Discussion/Brief Chronology of Calendar Periods and Reform Movements - Wikisource, the free online library
en.wikisource.org · secondary
- Pos A · Public materials such as this Wikisource chronology are read as placing thirteen-month proposals among many historical calendar schemes; skeptical readings treat the Thirteen Month Calendar claim set as overstated relative to the compared public record pending further sources.“Brief Chronology of Calendar Periods and Reform Movements”
- Pos B · Public materials such as this Wikisource chronology are read as preserving extended attention to thirteen-month and related reforms; affirming readings treat the Thirteen Month Calendar claim set as under-accounted for in mainstream summaries pending further sources.“Brief Chronology of Calendar Periods and Reform Movements”
Thirteen-Month Calendar by Julia E. Johnsen | Open Library
openlibrary.org · secondary
- Pos A · The Open Library record is read as a catalog trace of a 1929 Reference Shelf compilation, treated as archival bibliography rather than a settled modern claim; skeptical readings cite it as showing historical debate materials exist while still requiring fuller public-record comparison before the shell is weighted.“An edition of Thirteen-Month Calendar (1929)”
- Pos B · The Open Library record is read as a catalog trace of a 1929 Reference Shelf compilation, treated as early assembled public discussion of the calendar idea; affirming readings cite it as showing the topic was already anthologized while still requiring fuller sourcing before the shell is weighted.“An edition of Thirteen-Month Calendar (1929)”
Twelve and Thirteen Month Years - The Creators Calendar
thecreatorscalendar.com · secondary
- Pos A · This page is cited as presenting twelve- and thirteen-month lunar years as the Creator’s measure of time, which conventional readings treat as an overstated religious calendar claim relative to the compared public record pending fuller source work.“Twelve and Thirteen Month Years”
- Pos B · This page is cited as presenting twelve- and thirteen-month lunar years as the Creator’s measure of time, which affirming readings treat as an under-accounted original pattern relative to mainstream summaries pending fuller source work.“Twelve and Thirteen Month Years”
Thirteen-Month Calendar/Affirmative Discussion/Calendar Reform - Wikisource, the free online library
en.wikisource.org · secondary
- Pos A · Skeptical readings treat this Wikisource affirmative tract as a historical reform brief that is cited as arguing months and weeks are arbitrary units and that simplification mainly serves business and social convenience; they are read as not yet establishing that a thirteen-month model is settled against the wider public calendar record, so further sourced comparison is still required before the shell is treated as fixed.“months and weeks are arbitrarily fixed units”
- Pos B · Affirming readings treat the same Cotsworth affirmative discussion as public material that is cited as documenting long-running reform aims and the case for months as exact week multiples where nature allows; they are read as under-reflected in mainstream calendar summaries, so further sourced comparison is still required before the shell is treated as fixed. The competing reading remains available for comparison from the same public materials.“month is an exact multiple of the week”
Amharic Calendar: Living Thirteen Months of Sunshine — NKENNE
nkenne.com · secondary
- Pos A · The excerpt is read as a cultural explainer of Ethiopia’s twelve equal months plus Pagumē, treated by skeptical readings as consistent with the known public record and not elevating the claim set beyond conventional summaries, pending further research sources.“thirteen months of sunshine”
- Pos B · The excerpt is read as a cultural explainer of Ethiopia’s twelve equal months plus Pagumē, treated by affirming readings as illustrating a living thirteen-month system still under-accounted for in mainstream Gregorian-centered summaries, pending further research sources.“This thirteenth month is called Pagumē”
User:Arcorann/The Thirteen-Month Calendar - Wikisource, the free online library
en.wikisource.org · secondary
- Pos A · Skeptical readings treat this Wikisource user compilation as a narrow archival pointer to older debate-shelf listings, not as broad public-record support that a thirteen-month calendar claim set is well established; the page is cited as showing scattered reference-shelf apparatus that still requires fuller sourcing before the shell is treated as settled.“The Thirteen-Month Calendar”
- Pos B · Affirming readings treat this Wikisource user compilation as a sign that thirteen-month calendar materials were organized for public discussion yet remain thin in mainstream summaries; the page is cited as showing reference-shelf apparatus that still requires fuller sourcing before the shell is treated as settled. The competing reading remains available for comparison from the same public materials.“The Reference Shelf is published”
User:Arcorann/The Thirteen-Month Calendar - Wikisource, the free online library
en.m.wikisource.org · secondary
- Pos A · This Wikisource user compilation is read as a debate-reference shelf listing on calendar reform topics, treated as incomplete public-record material that skeptical readings cite when holding thirteen-month calendar claims overstated until fuller sourced comparison is supplied.“The Reference Shelf is published to make available”
- Pos B · This Wikisource user compilation is read as a dedicated reference shelf on thirteen-month calendar discussion, treated as public-record material that affirming readings cite when holding those claims under-accounted for in mainstream summaries until fuller sourced comparison is supplied.“The Reference Shelf is published to make available”
Calendar art : thirteen days, weeks, months, and years from around the world : Fisher, Leonard Everett : Free Download, Borrow, and Streaming : Internet Archive
archive.org · secondary
- Pos A · Skeptical readings treat this Archive record as comparative calendar art across civilizations, cited as cultural description of how societies measured time rather than as support that a thirteen-month claim set is settled or under-accounted for in mainstream summaries; further sources are still required.“thirteen days, weeks, months, and years”
- Pos B · Affirming readings treat this Archive record as public material on thirteen-unit calendar structures worldwide, cited as evidence that thirteen-month patterns appear in broader timekeeping history and remain under-accounted for in mainstream summaries; further sources are still required. The competing reading remains available for comparison from the same public materials.“thirteen days, weeks, months, and years”
Thirteen-Month Calendar - Wikisource, the free online library
en.wikisource.org · secondary
- Pos A · Wikisource’s 1929 reference-shelf compilation is cited as recording long-running debate on Gregorian drawbacks and reform study, which skeptical readings treat as historical discussion rather than a settled thirteen-month system in general use; the claim shell is read as still needing fuller sources before it is treated as settled.“practical defects of the present Gregorian calendar”
- Pos B · Wikisource’s 1929 reference-shelf compilation is cited as recording organized reform interest and formal study channels, which affirming readings treat as evidence that thirteen-month proposals are under-accounted for in brief mainstream summaries; the claim shell is read as still needing fuller sources before it is treated as settled.“League of Nations in 1923 assigned a committee”