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Open the Almanac

Byodoji Almanac

Convert a Gregorian date to the Japanese lunisolar calendar, then compare East Asian date selection, Sukuyō, annotated calendars, Hoki witnesses, regional almanacs, and modern research.

Selected date

 

Loading the lunisolar date and calendar notes.

How to read the Byodoji Almanac

This is a way to read a historical calendar system, not a verdict on the fortune of a day.

Calendar fortune did not arise from one period or one book. East Asian date selection, the Chinese Sukuyō scripture, Japanese annotated calendars, medieval selection manuals, regional calendars, popular almanacs, craft practice, and modern fortune calendars transmitted different rules and uses.

The Byodoji Almanac uses critically compared tables based on Hoki witnesses to calculate which notes appear on a selected date. Their meanings are then read across other traditions and scholarship, distinguishing direct evidence, wider group context, and points that remain unattested.

Favorable and unfavorable entries can appear together because they concern different activities and descend from different textual layers. Read the relevant activity, conditions, and variants rather than comparing totals.

Before using this page

Comparative explanations are checked against public resources from the National Museum of Japanese History, the International Research Center for Japanese Studies, the National Diet Library, CBETA, and university repositories. References are attached to each section, and limits of the evidence are stated where appropriate.

The entries are presented as historical material. Do not base medical, legal, contractual, travel, or other practical decisions on these notes alone.

Lunisolar conversion uses the Byodoji Online lunar API in Japan Standard Time. The supported range is January 1, 1900 through December 31, 2100.

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Worship & Live Streams
Live StreamingZUIKIPractice SutrasShakyo OfferingEma Offering
Prayers & Memorials
Ritual CalendarApply for a Goma PrayerSacred ItemsApplication for PrayerAñjali - Pray Here and NowDāna
Learn & Read
Learn About ByodojiArticlesTemple GuideVarious ordersSpecial Ritual
Byodoji & Visiting
About ByodojiAccessVisiting GuideLive Streaming
Questions & Contact
Ask the Head PriestAnswers to questions we have receivedContact UsPersonal MeetingOtayori
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Learn About Byodoji

History of Byodoji TempleByodoji Temple Origin RecordPrincipal Yakushi NyoraiThe Eleven-Faced Kannon of the JibutsudoVaiśravaṇa at ByodojiKṣitigarbha at ByodojiAcala at ByodojiThe Box-Cart Miracle

Articles

Byodoji AlmanacThe Complete EnnichiGanfuji: a Japanese prayer concerning cancerWhat Is "One Buddha, One Land"? Why Two Buddhas Never Arise in One World, Traced from the Sources21-Day Gyakushu OfferingWhat Is the Kaikyoge? The Sutra-Opening Verse, Its Meaning and OriginsWhat Is Shugen? Tracing the "Gen" of Shugendō to Its SourcesWhat Is Nyubutsu Samaya? Entering the Buddha's Vow in Shingon BuddhismWhat Is Transgressing the Samaya? Breaking the Vow With the BuddhaWhat Is Kyuri KajiKyuri Kaji Temples Across JapanWhat Is the Eleven-Faced KannonWhat Is VaiśravaṇaWhat Is KṣitigarbhaWhat Is AcalaWhat Is Bhaisajyaguru (Yakushi Nyorai)What Is the RishukyoWhat Is the Roji-no-ge (Verse on Striking the Gaṇḍī)? What the Bell TellsFocusing on People and Prayer — Eight Years of Cashless Offerings at ByodojiIn preparationThe Complete Guide to the Shikoku Pilgrimage (Ohenro)Shikoku 88 Temple Directory

Temple Guide

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Various orders

morning and evening service booksPraise for the Vajradhātu MaṇḍalaPraise for the Garbhakoṣadhātu MaṇḍalaShingon service bookSaikoku 33 pilgrimages service bookMeal service book

Special Ritual

New Year special Goma prayer8K HomaOhigan Memorial ServiceObon Memorial ServiceCucumber BlessingEnnichi Yakushi HomaSunday Homa

Events

top pageTokai lectureKoyasan 2023Saikoku Kannon Pilgrimage 2024 #1Western Pilgrimage 2024 #2Western Pilgrimage 2025: A Journey of the WishShikoku Pilgrimage Tour 2026Shikoku Pilgrimage Tour 2026 #2

Community

Temple Visit GuidelinesPhoto & Social Media Posting GuidelinesCommunity GuidelinesContent Distribution Guidelines for VisitorsDiscord Byodoji ServerByodoji Notion

Other pages

Live StreamingRitual CalendarApply for a Goma PrayerSacred ItemsZUIKIPractice SutrasShakyo OfferingEma OfferingOnline Shikoku PilgrimageAsk the Head PriestAnswers to questions we have receivedContact UsPersonal MeetingOtayoriUpahāra: Sending an OfferingApplication for PrayerAñjali - Pray Here and NowSoten MagazineDānaHukTokHandmade, Prayer-Blessed Shimenawa from a TempleBamboo MandalaByodokoRanking of Zuiki points and Mantra points