en 587

587 in various calendars
Gregorian calendar	587; DLXXXVII
Ab urbe condita	1340
Armenian calendar	36; ԹՎ ԼԶ
Assyrian calendar	5337
Balinese saka calendar	508–509
Bengali calendar	−7 – −6
Berber calendar	1537
Buddhist calendar	1131
Burmese calendar	−51
Byzantine calendar	6095–6096
Chinese calendar	丙午年 (Fire Horse); 3284 or 3077; — to —; 丁未年 (Fire Goat); 3285 or 3078
Coptic calendar	303–304
Discordian calendar	1753
Ethiopian calendar	579–580
Hebrew calendar	4347–4348
Hindu calendars
- Vikram Samvat	643–644
- Shaka Samvat	508–509
- Kali Yuga	3687–3688
Holocene calendar	10587
Iranian calendar	35 BP – 34 BP
Islamic calendar	36 BH – 35 BH
Javanese calendar	476–477
Julian calendar	587; DLXXXVII
Korean calendar	2920
Minguo calendar	1325 before ROC; 民前1325年
Nanakshahi calendar	−881
Seleucid era	898/899 AG
Thai solar calendar	1129–1130
Tibetan calendar	阳火马年; (male Fire-Horse); 713 or 332 or −440; — to —; 阴火羊年; (female Fire-Goat); 714 or 333 or −439

Millennium:	1st millennium
Centuries:	5th century; 6th century ; 7th century;
Decades:	560s; 570s; 580s ; 590s; 600s;
Years:	584; 585; 586; 587 ; 588; 589; 590;

Year 587 (DLXXXVII) was a common year starting on Wednesday of the Julian calendar. The denomination 587 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

Emperor Maurice builds more fortifications along the Danube frontier, separating the Byzantine Empire from the realm of the Avars and Slavs (approximate date).
Comentiolus, Byzantine general (magister militum), assembles an army of 10,000 men at Anchialus (modern Bulgaria). He prepares an ambush for the Avars in the Haemus Mountains.^[1]

King Guntram sends envoys to Brittany, to stop the raiding on Frankish territory. He compels obedience from Waroch II and demands 1,000 solidus for looting Nantes.
King Reccared I renounces Arianism and adopts Catholicism. Many Visigothic nobles follow his example, but in Septimania (Southern Gaul) there are Arian uprisings.
November 28 – Treaty of Andelot: Guntram recognizes King Childebert II of Austrasia as heir. He signs a treaty with Queen Brunhilda at Andelot-Blancheville.
Winter – Childebert II appoints Uncelen as the Duke of Alemannia (approximate date).

Battle of Shigisan: The Soga clan, which has intermarried with the royal Yamato clan, fights the Mononobe and Nakatomi clans over influence in selecting a new successor for the Japanese throne, after Emperor Yōmei dies. The Soga favor importing Buddhism from the Asian mainland, described there as the religion of the most civilized. The Mononobe and Nakatomi hold that Buddhism would be an affront to the gods. The Soga win the civil war and Sushun, age 66, becomes the 32nd emperor of Japan.
Fall – The Liang dynasty ends: Emperor Wéndi of the Sui dynasty abolishes Western Liang and expands his territory into the lower valley of the Yangtze River. He sends his official Gao Jiong to the capital Jiangling, to pacify the citizens. The former emperor Xiao Jing Di becomes a vassal and is named the Duke of Liang.
Bagha Qaghan becomes the seventh ruler (khagan) of the Turkic Kaganate.

The filioque clause is first used in the Nicene Creed, against the Arians in Visigothic Spain (approximate date).

Martindale, John Robert; Jones, Arnold Hugh Martin; Morris, J., eds. (1992). The Prosopography of the Later Roman Empire, Volume III: A.D. 527–641. Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-20160-5.