671

Year 671 (DCLXXI) was a common year starting on Wednesday of the Julian calendar. The denomination 671 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

December 7 – An annular solar eclipse is visible from Tibet to the Maghreb.{{cite web|url=http://eclipse.gsfc.nasa.gov/SEhistory/SEplot/SE0671Dec07A.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://eclipse.gsfc.nasa.gov/SEhistory/SEplot/SE0671Dec07A.pdf |archive-date=2022-10-09 |url-status=live |publisher=NASA |title=Annular Solar Eclipse of 0671 Dec 07 |access-date=2015-05-29 |author=F. Espenak |author-link=Fred Espenak |date=2009}}

Perctarit returns to Lombardy from exile and reclaims his realm, which is being ruled on behalf of Garibald, since his father King Grimoald I died. He deposes the young king, and becomes the new ruler of the Lombard Kingdom in Italy. During his reign Perctarit makes Catholicism the official religion, but does not recognize papal authority.{{cite book | last=Brown |first=T. S. |title=The New Cambridge Medieval History: II. c. 700 - c. 900 |page=321}} Grimoald is buried in the St. Ambrogio Church (Milan).

Battle of Two Rivers: King Ecgfrith of Northumbria defeats the Picts under King Drest VI, in the vicinity of Moncreiffe Island, near Perth (Scotland).Fraser, James E. (2006). "The Pictish Conquest", p.59 After the battle the Picts are reduced to slavery, and subject to the yoke of captivity for the next 14 years.Colgrave, Bertram (1927). "The Life of Bishop Wilfrid", Cambridge University. {{ISBN|978-0521-31387-2}}

Yijing, Chinese Buddhist monk, travels by boat from Guangzhou, and visits the capital of the partly Buddhist kingdom of Srivijaya in Palembang (Indonesia). He stays for 6 months to study Sanskrit grammar and the Malay language.
June 10 – Emperor Tenji introduces a water clock (clepsydra) called Rokoku. The instrument, which measures time and indicates hours, is placed in the capital of Ōtsu in Japan.{{cite web|title=Why is June 10 known as Time Memorial Day? |publisher=Seiko Institute of Horology |url=http://www.seiko.co.jp/en/horology/knowledge/index.html |access-date=2012-04-17 |url-status=dead |archive-url=https://web.archive.org/web/20120212021925/http://www.seiko.co.jp/en/horology/knowledge/index.html |archive-date=February 12, 2012 }}
Silla seizes control of the former Baekje capital of Sabi from the Tang Protectorate General to Pacify the East.