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633 in various calendars
Gregorian calendar	633; DCXXXIII
Ab urbe condita	1386
Armenian calendar	82; ԹՎ ՁԲ
Assyrian calendar	5383
Balinese saka calendar	554–555
Bengali calendar	40
Berber calendar	1583
Buddhist calendar	1177
Burmese calendar	−5
Byzantine calendar	6141–6142
Chinese calendar	壬辰年 (Water Dragon); 3330 or 3123; — to —; 癸巳年 (Water Snake); 3331 or 3124
Coptic calendar	349–350
Discordian calendar	1799
Ethiopian calendar	625–626
Hebrew calendar	4393–4394
Hindu calendars
- Vikram Samvat	689–690
- Shaka Samvat	554–555
- Kali Yuga	3733–3734
Holocene calendar	10633
Iranian calendar	11–12
Islamic calendar	11–12
Japanese calendar	N/A
Javanese calendar	523–524
Julian calendar	633; DCXXXIII
Korean calendar	2966
Minguo calendar	1279 before ROC; 民前1279年
Nanakshahi calendar	−835
Seleucid era	944/945 AG
Thai solar calendar	1175–1176
Tibetan calendar	阳水龙年; (male Water-Dragon); 759 or 378 or −394; — to —; 阴水蛇年; (female Water-Snake); 760 or 379 or −393

Millennium:	1st millennium
Centuries:	6th century; 7th century ; 8th century;
Decades:	610s; 620s; 630s ; 640s; 650s;
Years:	630; 631; 632; 633 ; 634; 635; 636;

Year 633 (DCXXXIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 633 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

By place

Britain

October 12 – Battle of Hatfield Chase: King Edwin of Northumbria is defeated and killed by Penda of Mercia and Cadwallon of Gwynedd, at Hatfield Chase (South Yorkshire).
Osric succeeds his uncle Edwin as king of Deira. Prince Eanfrith returns from Pictland to claim his rightful crown of Bernicia (Northern England). Both revert to paganism.
Winter – Cadwallon is besieged by King Osric at York; he successfully breaks out of the city with all his forces, by surprise, and destroys Osric's army.^[1]

Arabia

Ridda Wars: Abu Bakr, caliph (khalifa) of the Rashidun Caliphate, launches a military campaign against the Arab tribe of Kinda, which inhabits the region of Najran (Yemen).
March 18 – The Arabian Peninsula is united under the central authority of Abu Bakr. This sets the stage for the Islamic conquest of Persia and the fall of the Sassanid dynasty.
April – Battle of Chains (Kuwait) and Battle of River (Iraq): A Muslim army (18,000 men) under Khalid ibn al-Walid invades Mesopotamia, and wins decisive victories.^[2]
May – Battle of Walaja: The Rashidun Caliphate army under Khalid defeats the Persians and their Arab Christian allies. The Persian army is at least three times the size.^[3]
Battle of Ullais: Forces of the Rashidun Caliphate under Khalid defeat an entire Persian army (70,000 men^[4]) near the river Euphrates. Khalid besieges the city of Hira.
Siege of Hira: The Muslim Arabs (15,000 men) under Khalid attack the fortress city of Hira. After a brief fight the citizens surrender, and bring gifts to Khalid.^[5]
July – Siege of Anbar: A Muslim Arab army under Khalid besieges the fortress city of Anbar. The Persian governor surrenders and is allowed to retire.^[6]
Battle of Ein ut Tamr: The Muslim army attacks a Persian frontier post located south of Anbar. The Arab Christian auxiliaries are overrun and surrender.
August – Battle of Dumat Al-Jandal: A Muslim army (10,000 men) under Khalid defeats the rebel Arab Christians at Dumat Al-Jandal (Saudi Arabia).
November – Battle of Muzayyah, Battle of Saniyy, and Battle of Zumail: Khalid coordinates successful night attacks against the Arab Christians.

By topic

Arts and sciences

Li Chungfeng builds an armillary sphere (approximate date).

Religion

December 5 – Fourth Council of Toledo: King Sisenand orders a meeting in the church of St. Leocadia; the bishops accept a decree that all Visigoths must take an oath to preserve the stability of the Gothic nation.^[7]
Paulinus of York flees with Queen Æthelburga and her daughter Eanflæd, age 7, south to Kent, where he is made bishop of Rochester. Eanflæd grows up under the protection of her uncle, King Eadbald of Kent.^[8]

Births

Clovis II, king of Neustria and Burgundy
Jamadevi, queen of Hariphunchai (Thailand) (approximate date)
Wilfrid, Anglo-Saxon bishop (approximate date)

Deaths

October 12 or 632 – Edwin, king of Northumbria
Osric, king of Deira (approximate date)
Suintila, king of the Visigoths (approximate date)
Dai Zhou, chancellor of the Tang dynasty

References

^ Bede Book III, Chapter I.
^ Roberts, J: "History of the World." Penguin, 1994
^ Campaigns in Eastern Iraq, "Khalifa Abu Bakr", Companion of the Prophet. Virtual library of Witness-Pioneer.
^ al-Tabari Vol. 2, p. 562.
^ The Caliphate, Its Rise, Decline, and Fall. From Original Sourcesby William Muir, p. 56
^ Annals of the Early Caliphate by William Muir, p. 85
^ Thompson, E. A. (1969) "The Goths in Spain". Oxford: Clarendon Press
^ Bede Book II, Chapter XX.