[Latest] How old is National

Living Person

National_Diet
is

As of April 13, 2026

136 years old
approximately!

Date of Birth

(1890 ) is

Tiger
Year

* Calculated from Wikipedia data.
Accuracy is not guaranteed.

approx.Cosmic Age Calculator

Moon

approx. 1823.1 years old

Mercury

approx. 566.2 years old

Venus

approx. 221.7 years old

Mars

approx. 72.5 years old

Jupiter

approx. 11.5 years old

Saturn

approx. 4.6 years old

* Calculated based on each planet's orbital period.

National Diet of Japan 国会 Kokkai
221st Session of the National Diet

Type
Type	Bicameral
Houses	House of Councillors (upper house) House of Representatives (lower house)
History
Founded	29 November 1890 (135 years, 135 days)
Leadership
President of the House of Councillors	Masakazu Sekiguchi, LDP since 11 November 2024
Speaker of the House of Representatives	Eisuke Mori, LDP since 18 February 2026
Prime Minister	Sanae Takaichi, LDP since 21 October 2025
Structure
Seats	713 248 (House of Councillors) 465 (House of Representatives)

House of Councillors political groups	Government (101) LDP (101) Supported by (19) JIP (19) Opposition (121) CDP (40) DPFP (25) Kōmeitō (21) Sanseitō (15) JCP (7) Reiwa (5) CPJ (2) Okinawa Whirlwind (2) Team Mirai (2) SDP (2) Unaffiliated (6) LDP (1/Speaker) CDP (1/Vice Speaker) Independent (4) Vacant (1) Vacant (1)

House of Representatives political groups	Government (316) LDP (316) Supported by (36) JIP (36) Opposition (106) CRA (48) DPFP (28) Sanseitō (15) Team Mirai (11) JCP (4) Unaffiliated (7) Independent (7)
Elections
House of Councillors voting system	Parallel voting: Single non-transferable vote (148 seats) Party-list proportional representation (100 seats) Staggered elections
House of Representatives voting system	Parallel voting: First-past-the-post voting (289 seats) Party-list proportional representation (176 seats)
Last House of Councillors election	20 July 2025
Last House of Representatives election	8 February 2026
Next House of Councillors election	2028
Next House of Representatives election	By 2030
Meeting place

National Diet Building, Nagatachō 1-7-1, Chiyoda District, Tokyo, Japan 35°40′33″N 139°44′42″E / 35.67583°N 139.74500°E / 35.67583; 139.74500
Website
House of Councillors – official website House of Representatives – official website

Wikipedia Categories

National Diet

National legislatures

Bicameral legislatures

1890 establishments in Japan

Infobox legislature with background color

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