Year 636 (DCXXXVI) was a leap year starting on Monday (link will display the full calendar) of the Julian calendar. The denomination 636 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.

Millennium: 1st millennium
636 in various calendars
Gregorian calendar636
Ab urbe condita1389
Armenian calendar85
Assyrian calendar5386
Balinese saka calendar557–558
Bengali calendar43
Berber calendar1586
Buddhist calendar1180
Burmese calendar−2
Byzantine calendar6144–6145
Chinese calendar乙未(Wood Goat)
3332 or 3272
    — to —
丙申年 (Fire Monkey)
3333 or 3273
Coptic calendar352–353
Discordian calendar1802
Ethiopian calendar628–629
Hebrew calendar4396–4397
Hindu calendars
 - Vikram Samvat692–693
 - Shaka Samvat557–558
 - Kali Yuga3736–3737
Holocene calendar10636
Iranian calendar14–15
Islamic calendar14–15
Japanese calendarN/A
Javanese calendar526–527
Julian calendar636
Korean calendar2969
Minguo calendar1276 before ROC
Nanakshahi calendar−832
Seleucid era947/948 AG
Thai solar calendar1178–1179
Tibetan calendar阴木羊年
(female Wood-Goat)
762 or 381 or −391
    — to —
(male Fire-Monkey)
763 or 382 or −390


By place

Byzantine Empire

  • Arab–Byzantine War: Emperor Heraclius assembles a large army (100,000 men) consisting of contingents of Byzantines, Slavs, Franks, Georgians, Armenians, and Christian Arabs.[1]He establishes a base at Yaqusah (near Gadara), close to the edge of the Golan Heights, protecting the vital main road from Egypt to Damascus. The base is protected by deep valleys and precipitous cliffs, well supplied with water and grazing.[2]
  • Summer – Heraclius summons a church assembly at Antioch and scrutinises the situation. He accepts the argument that Byzantine disobedience to God is to blame for the Christian disaster in Syria. Heraclius leaves for Constantinople with the words, ‘Peace be with you Syria — what a beautiful land you will be for your enemy’.[3]




By topic






  1. ^ Al-Waqidi & 8th century, p. 100
  2. ^ Yarmuk 636 A.D.: The Muslim Conquest of Syria. David Nicolle (1994), p. 44. ISBN 1-85532-414-8
  3. ^ The Great Islamic Conquests AD 632–750 (2009), David Nicolle, p. 51. ISBN 978-1-84603-273-8
  4. ^ Nicolle, David (1994). Yarmuk 636 A.D.:The Muslim Conquest of Syria. Osprey Publishing. p. 43. ISBN 1-85532-414-8.
  5. ^ Nafziger, George F.; Walton, Mark W. (2003). Islam at War. Westport, CT: Greenwood Publishing. p. 30. ISBN 0-275-98101-0.
  6. ^ Nicolle, David (1994). Yarmuk 636 A.D.: The Muslim Conquest of Syria. Osprey Publishing. pp. 6, 19. ISBN 1-85532-414-8.
  7. ^ Kirby, p. 51

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