674

674 in various calendars
Gregorian calendar	674; DCLXXIV
Ab urbe condita	1427
Armenian calendar	123; ԹՎ ՃԻԳ
Assyrian calendar	5424
Balinese saka calendar	595–596
Bengali calendar	81
Berber calendar	1624
Buddhist calendar	1218
Burmese calendar	36
Byzantine calendar	6182–6183
Chinese calendar	癸酉年 (Water Rooster); 3371 or 3164; — to —; 甲戌年 (Wood Dog); 3372 or 3165
Coptic calendar	390–391
Discordian calendar	1840
Ethiopian calendar	666–667
Hebrew calendar	4434–4435
Hindu calendars
- Vikram Samvat	730–731
- Shaka Samvat	595–596
- Kali Yuga	3774–3775
Holocene calendar	10674
Iranian calendar	52–53
Islamic calendar	54–55
Japanese calendar	Hakuchi 25; (白雉２５年)
Javanese calendar	565–566
Julian calendar	674; DCLXXIV
Korean calendar	3007
Minguo calendar	1238 before ROC; 民前1238年
Nanakshahi calendar	−794
Seleucid era	985/986 AG
Thai solar calendar	1216–1217
Tibetan calendar	阴水鸡年; (female Water-Rooster); 800 or 419 or −353; — to —; 阳木狗年; (male Wood-Dog); 801 or 420 or −352

Millennium:	1st millennium
Centuries:	6th century; 7th century ; 8th century;
Decades:	650s; 660s; 670s ; 680s; 690s;
Years:	671; 672; 673; 674 ; 675; 676; 677;

Year 674 (DCLXXIV) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. The denomination 674 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

Siege of Constantinople: The Arab fleet enters the Sea of Marmara and appears before the southern walls of Constantinople, in an attempt to blockade the Byzantine capital.
April – A Muslim expeditionary force disembarks on the Thracian shore (near Hebdomon), and lays siege to the massive Theodosian Walls, on the landward side to the west.
Summer – Abu Ayyub al-Ansari, companion and standard-bearer of Muhammad, is killed during the first attempt of the siege of the city (approximate date).
Winter – Arab forces under Yazid (son of caliph Muawiyah I) retire to Cyzicus (Turkey). For the next 4 years the Arab fleet installs a loose blockade around Constantinople.

The Muslim-Arabs raid Crete, killing and enslaving many soldiers (approximate date).

King Ecgfrith of Northumbria defeats a coalition led by the Mercians. He annexes the region of Lindsey (Lincolnshire).
King Æscwine succeeds his father Cenfus as ruler of Wessex (approximate date).

King Vikramaditya I of Chalukya defeats the Pallavan army in battle, and destroys its capital Kanchi (modern India).^[1]
In Korea, Anapji is constructed by order of King Munmu of Silla.
In Japan, Princess Ōku proceeds to the Ise Jingu.

Æthelthryth, former queen of Northumbria, gives large areas of land to bishop Wilfrid to found Hexham Abbey.
The Monkwearmouth monastery is founded by Benedict Biscop in Northumbria.
The first glass windows are placed in English churches (approximate date).

^ Spencer C. Tucker (2010). A Global Chronology of Conflict: "From the Ancient World to the Modern Middle East", p. 205. ISBN 978-1-85109-672-5