1234

1234 (MCCXXXIV) was a common year starting on Sunday of the Julian calendar, the 1234th year of the Common Era (CE) and Anno Domini (AD) designations, the 234th year of the 2nd millennium, the 34th year of the 13th century, and the 5th year of the 1230s decade. As of the start of 1234, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1200s  1210s  1220s  – 1230s –  1240s  1250s  1260s
Years:	1231 1232 1233 – 1234 – 1235 1236 1237

1234 in other calendars

Gregorian calendar	1234 MCCXXXIV
Ab urbe condita	1987
Armenian calendar	683 ԹՎ ՈՁԳ
Assyrian calendar	5984
Balinese saka calendar	1155–1156
Bengali calendar	641
Berber calendar	2184
English Regnal year	18 Hen. 3 – 19 Hen. 3
Buddhist calendar	1778
Burmese calendar	596
Byzantine calendar	6742–6743
Chinese calendar	癸巳年 (Water Snake) 3930 or 3870     — to — 甲午年 (Wood Horse) 3931 or 3871
Coptic calendar	950–951
Discordian calendar	2400
Ethiopian calendar	1226–1227
Hebrew calendar	4994–4995
Hindu calendars
- Vikram Samvat	1290–1291
- Shaka Samvat	1155–1156
- Kali Yuga	4334–4335
Holocene calendar	11234
Igbo calendar	234–235
Iranian calendar	612–613
Islamic calendar	631–632
Japanese calendar	Tenpuku 2 / Bunryaku 1 (文暦元年)
Javanese calendar	1143–1144
Julian calendar	1234 MCCXXXIV
Korean calendar	3567
Minguo calendar	678 before ROC 民前678年
Nanakshahi calendar	−234
Thai solar calendar	1776–1777
Tibetan calendar	ཆུ་མོ་སྦྲུལ་ལོ་ (female Water-Snake) 1360 or 979 or 207     — to — ཤིང་ཕོ་རྟ་ལོ་ (male Wood-Horse) 1361 or 980 or 208

Events

• February 9 — Song Dynasty Chinese and Mongolian armies occupied the Jurchen capital at Caizhou, marking the collapse of the Jin Dynasty (1115-1234).
• Supposedly Mali begins revolt against oppressors.
• Canonization of Saint Dominic
• Pope Gregory IX called for a Crusade against Bosnia and replaced the Bogumil Bosnian Bishop with a Catholic Dominican German Johann
• Pope Gregory IX released the Nova Compilatio Decretalium
• King Andrew II of Hungary proclaimed herzeg Coloman as Ban of Bosnia, who passed it on to Prijezda, a cousin of Ban Matej Ninoslav (1234 to 1239) despite Matej being the legitimate Ban of Bosnia

Births

• Abaqa Khan, Mongol emperor of Persia (died 1282)

Deaths

• April 16 – Richard Marshal, 3rd Earl of Pembroke (dob. unknown)
• June 18 – Emperor Chūkyō of Japan (born 1218)
• August 31 – Emperor Go-Horikawa of Japan (born 1212)
• Alan, Lord of Galloway
• Stefan Radoslav, King of Serbia (born 1192)

Monarchs

• Aragon – James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)
• Castile – Ferdinand III, the Saint King of Castile and León (reigned from 1217 to 1252)
• Navarre – Sancho VII the Strong King of Navarre (reigned from 1194 to 1234)