Heisei

E13061

Japanese era historical period

Heisei is the Japanese era name corresponding to the reign of Emperor Akihito, spanning from 1989 to 2019.

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All labels observed (6)

Label	Occurrences
Heisei period	21
Heisei era	12
Heisei canonical	7
平成	3
平成時代	2
Heisei era enthronement of Akihito	1

How this entity was disambiguated

This entity first appeared as the object of triple T105657 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Heisei
Context triple: [Emperor of Japan, previousEmperorReignName, Heisei]

A. Showa era
The Shōwa era was the period of Emperor Hirohito’s reign in Japan (1926–1989), marked by militarization and World War II, followed by rapid postwar economic growth and modernization.
B. Reiwa
Reiwa is the current era of Japan’s official calendar, which began in 2019 with the accession of Emperor Naruhito.
C. Taisho era
The Taisho era was a period in Japanese history from 1912 to 1926 marked by political liberalization, cultural modernization, and the growth of urban middle-class society.
D. Meiji era
The Meiji era was a transformative period in Japanese history (1868–1912) marked by rapid modernization, industrialization, and the establishment of Western-style political, educational, and social institutions.
E. Akihito
Akihito is the former Emperor of Japan who abdicated in 2019, ending the Heisei era and becoming the first Japanese monarch to step down in over two centuries.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Heisei
Target entity description: Heisei is the Japanese era name corresponding to the reign of Emperor Akihito, spanning from 1989 to 2019.

A. Showa era
The Shōwa era was the period of Emperor Hirohito’s reign in Japan (1926–1989), marked by militarization and World War II, followed by rapid postwar economic growth and modernization.
B. Reiwa
Reiwa is the current era of Japan’s official calendar, which began in 2019 with the accession of Emperor Naruhito.
C. Taisho era
The Taisho era was a period in Japanese history from 1912 to 1926 marked by political liberalization, cultural modernization, and the growth of urban middle-class society.
D. Meiji era
The Meiji era was a transformative period in Japanese history (1868–1912) marked by rapid modernization, industrialization, and the establishment of Western-style political, educational, and social institutions.
E. Akihito
Akihito is the former Emperor of Japan who abdicated in 2019, ending the Heisei era and becoming the first Japanese monarch to step down in over two centuries.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	Japanese era ⓘ historical period ⓘ
calendarSystem	Japanese era calendar ⓘ
capitalDuringEra	Tokyo ⓘ
country	Japan ⓘ
emperorDuringEra	Akihito ⓘ
emperorTitle	125th Emperor of Japan ⓘ
endDate	2019-04-30 ⓘ
endEvent	abdication of Emperor Akihito ⓘ accession of Emperor Naruhito ⓘ
endGregorianYear	2019 ⓘ
eraCode	H ⓘ
eraEndHeiseiYear	Heisei 31 ⓘ
eraNameOf	Emperor Akihito ⓘ linked to: Akihito
eraNumberInJapan	247th era name (traditional count) ⓘ 4th era of modern Japan (post-Meiji) ⓘ
eraStartHeiseiYear	Heisei 1 ⓘ
follows	Shōwa ⓘ linked to: Showa era
governmentFormDuringEra	constitutional monarchy ⓘ
kanji	平成 ⓘ linked to: Heisei
language	Japanese ⓘ
meaning	achieving peace ⓘ
namedAfter	Emperor Akihito ⓘ linked to: Akihito
notableEventDuringEra	1990s Japanese asset price bubble collapse ⓘ 1995 Great Hanshin earthquake ⓘ linked to: Great Hanshin earthquake 2011 Tōhoku earthquake and tsunami ⓘ 2019 transition to Reiwa era ⓘ Fukushima Daiichi nuclear disaster ⓘ Lost Decades of Japan ⓘ co-hosting of the 2002 FIFA World Cup ⓘ introduction of the consumption tax increase ⓘ
precedes	Reiwa ⓘ
predecessorEmperor	Hirohito ⓘ linked to: Emperor Hirohito
region	East Asia ⓘ
reignOf	Akihito ⓘ
romaji	Heisei ⓘ
startDate	1989-01-08 ⓘ
startEvent	accession of Emperor Akihito ⓘ death of Emperor Shōwa (Hirohito) ⓘ
startGregorianYear	1989 ⓘ
successorEmperor	Naruhito ⓘ
timeSpanInYears	about 30 years ⓘ
usedIn	Japanese banknotes ⓘ Japanese calendar dates ⓘ Japanese coins ⓘ Japanese driver licenses ⓘ Japanese legal documents ⓘ official Japanese documents ⓘ
writingSystem	Kanji ⓘ

How these facts were elicited

Referenced by (46)

Full triples — surface form annotated when it differs from this entity's canonical label.

Emperor of Japan → previousEmperorReignName → Heisei ⓘ

subject linked to: Emperor

Law Regarding the National Flag and National Anthem → era → Heisei period ⓘ

linked to: Heisei

Shinzo Abe (as Minister for Foreign Affairs) → heldDuring → Heisei era ⓘ

linked to: Heisei

Shōwa era → successorEra → Heisei era ⓘ

subject linked to: Showa era

linked to: Heisei

Reiwa → follows → Heisei ⓘ

House of Yamato → notablePeriod → Heisei period ⓘ

linked to: Heisei

Yasuhiro Nakasone → era → Heisei period ⓘ

linked to: Heisei

Junichiro Koizumi → era → Heisei period ⓘ

linked to: Heisei

Akihito → eraName → Heisei ⓘ

Heisei → kanji → 平成 ⓘ

linked to: Heisei

Heisei → romaji → Heisei ⓘ

Princess Kiko → era → Heisei era ⓘ

linked to: Heisei

Chrysanthemum Throne → previousReignName → Heisei ⓘ

Bright Peace → precedesEra → Heisei ⓘ

subject linked to: Bright peace

Kiichi Miyazawa → activeInPeriod → Heisei era ⓘ

linked to: Heisei

Her Majesty the Empress Emerita → eraAsEmpress → Heisei era ⓘ

linked to: Heisei

Yasuo Fukuda → era → Heisei period ⓘ

linked to: Heisei

Noboru Takeshita → era → Heisei period ⓘ

linked to: Heisei

Yoshirō Mori → era → Heisei period ⓘ

subject linked to: Yoshirō Mori (as Prime Minister of Japan)

linked to: Heisei

Michiko Shōda → era → Heisei period ⓘ

linked to: Heisei

Takamado family → era → Heisei era ⓘ

linked to: Heisei

明仁 → 元号 → 平成 ⓘ

linked to: Heisei

Sokui no rei → associatedWithEra → Heisei era enthronement of Akihito ⓘ

subject linked to: sokui no rei

linked to: Heisei

Edo-Tokyo Museum → focusesOnPeriod → Heisei period ⓘ

linked to: Heisei

Hisahito → eraOfBirth → Heisei era ⓘ

linked to: Heisei

Ryutaro Hashimoto → era → Heisei period ⓘ

linked to: Heisei

Tomiichi Murayama → era → Heisei period ⓘ

linked to: Heisei

小室眞子 → 時代 → 平成 ⓘ

subject linked to: 小室眞子

linked to: Heisei

Princess Kako of Akishino → era → Heisei era ⓘ

subject linked to: Kako

linked to: Heisei

Japanese traditional calendar → eraNameExample → Heisei ⓘ

Heisei era Godzilla series → era → Heisei period ⓘ

linked to: Heisei

Tsuyama Castle ruins → reconstructionPeriod → Heisei period ⓘ

linked to: Heisei

Keizō Obuchi → era → Heisei period ⓘ

linked to: Heisei

Sōsuke Uno → era → Heisei period ⓘ

linked to: Heisei

Godzilla vs. Mothra (1992 film) → era → Heisei period ⓘ

linked to: Heisei

Iris → era → Heisei era ⓘ

linked to: Heisei

Gamera 2: Attack of Legion → era → Heisei era ⓘ

linked to: Heisei

Toshiki Kaifu → era → Heisei period ⓘ

linked to: Heisei

Yamato dynasty → eraSpanned → Heisei period ⓘ

linked to: Heisei

Mikasa-no-miya household → hasHistoricalEra → Heisei period ⓘ

linked to: Heisei

Privy Seal of Japan → historicalPeriod → Heisei period ⓘ

linked to: Heisei

Central Government Reform of 2001 → timePeriod → Heisei era ⓘ

linked to: Heisei

上皇后美智子 → 時代 → 平成時代 ⓘ

linked to: Heisei

Kōgō → usedDuringPeriod → Heisei period ⓘ

subject linked to: Kōgō (Empress)

linked to: Heisei

燃える男 → era → 平成時代 ⓘ

linked to: Heisei

Princess Kako of Akishino → era → Heisei era ⓘ

linked to: Heisei

All labels observed (6)

How this entity was disambiguated Show

Statements (49)

How these facts were elicited Show

Referenced by (46)

How this entity was disambiguated

How these facts were elicited