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897 in various calendars
Gregorian calendar	897; DCCCXCVII
Ab urbe condita	1650
Armenian calendar	346; ԹՎ ՅԽԶ
Assyrian calendar	5647
Balinese saka calendar	818–819
Bengali calendar	304
Berber calendar	1847
Buddhist calendar	1441
Burmese calendar	259
Byzantine calendar	6405–6406
Chinese calendar	丙辰年 (Fire Dragon); 3594 or 3387; — to —; 丁巳年 (Fire Snake); 3595 or 3388
Coptic calendar	613–614
Discordian calendar	2063
Ethiopian calendar	889–890
Hebrew calendar	4657–4658
Hindu calendars
- Vikram Samvat	953–954
- Shaka Samvat	818–819
- Kali Yuga	3997–3998
Holocene calendar	10897
Iranian calendar	275–276
Islamic calendar	283–284
Japanese calendar	Kanpyō 9; (寛平９年)
Javanese calendar	795–796
Julian calendar	897; DCCCXCVII
Korean calendar	3230
Minguo calendar	1015 before ROC; 民前1015年
Nanakshahi calendar	−571
Seleucid era	1208/1209 AG
Thai solar calendar	1439–1440
Tibetan calendar	阳火龙年; (male Fire-Dragon); 1023 or 642 or −130; — to —; 阴火蛇年; (female Fire-Snake); 1024 or 643 or −129

Millennium:	1st millennium
Centuries:	8th century; 9th century ; 10th century;
Decades:	870s; 880s; 890s ; 900s; 910s;
Years:	894; 895; 896; 897 ; 898; 899; 900;

Year 897 (DCCCXCVII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.

Events

Spring – King Lambert II travels to Rome with his mother, Queen Ageltrude and brother Guy IV, Lombard duke of Spoleto, to meet Pope Stephen VI to receive reconfirmation of his imperial title. Guy is murdered on the Tiber by agents of Alberic I, a Frankish nobleman with political interests. He seizes Spoleto (possibly at the instigation of King Berengar I) and sets himself up as duke.

English warships (nine vessels from Alfred's new fleet) intercept six Viking longships in the mouth of an unknown estuary on the south coast (possibly at Poole Harbour) in Dorset. The Danes are blockaded, and three ships attempt to break through the English lines. Lashing the Viking boats to their own, the English crew board the enemy's vessels and kill everyone on board. Some ships manage to escape, two of the other three boats are driven against the Sussex coast. The shipwrecked sailors are brought before King Alfred the Great at Winchester and hanged. Just one Viking ship returns to East Anglia.^[1]

Caliph al-Mu'tadid recovers control of the Cilician Thughur (southeastern Anatolia) and of northern Syria, during the turmoil in the Tulunid government (approximate date).
15 March – Al-Hadi ila'l-Haqq Yahya enters Sa'dah and founds the Zaydi Imamate of Yemen.^[2]

Emperor Uda abdicates the throne after a ten year reign. He is succeeded by his 12-year-old son Daigo, as the 60th emperor of Japan.

January – The Cadaver Synod: Lambert II orders Stephen VI to exhume the nine-month-old cadaver of former pope Formosus, to redress him in papal robes, and have him put on trial while seated in a chair at St. Peter's. Formosus is 'convicted' of several crimes, his fingers of consecration are cut off, and the body is stripped of his vestments.
August – Stephen VI is removed from office, imprisoned and strangled in his cell. He is succeeded by Romanus as the 114th pope of the Catholic Church.
December – Romanus is deposed and succeeded by Theodore II as the 115th pope of Rome, who dies twenty days later.

^ Paul Hill (2009). The Viking Wars of Alfred the Great, pp. 140–141. ISBN 978-1-59416-087-5.
^ Madelung, W. (2004). "al-Ḥādī Ila 'l-Ḥaḳḳ". In Bearman, P. J.; Bianquis, Th.; Bosworth, C. E.; van Donzel, E. & Heinrichs, W. P. (eds.). The Encyclopaedia of Islam, Second Edition. Volume XII: Supplement. Leiden: E. J. Brill. pp. 334–335. doi:10.1163/1573-3912_islam_SIM_8582. ISBN 978-90-04-13974-9.

Gregorian calendar	897 DCCCXCVII
Ab urbe condita	1650
Armenian calendar	346 ԹՎ ՅԽԶ
Assyrian calendar	5647
Balinese saka calendar	818–819
Bengali calendar	304
Berber calendar	1847
Buddhist calendar	1441
Burmese calendar	259
Byzantine calendar	6405–6406
Chinese calendar	丙辰年 (Fire Dragon) 3594 or 3387 — to — 丁巳年 (Fire Snake) 3595 or 3388
Coptic calendar	613–614
Discordian calendar	2063
Ethiopian calendar	889–890
Hebrew calendar	4657–4658
Hindu calendars
- Vikram Samvat	953–954
- Shaka Samvat	818–819
- Kali Yuga	3997–3998
Holocene calendar	10897
Iranian calendar	275–276
Islamic calendar	283–284
Japanese calendar	Kanpyō 9 (寛平９年)
Javanese calendar	795–796
Julian calendar	897 DCCCXCVII
Korean calendar	3230
Minguo calendar	1015 before ROC 民前1015年
Nanakshahi calendar	−571
Seleucid era	1208/1209 AG
Thai solar calendar	1439–1440
Tibetan calendar	阳火龙年 (male Fire-Dragon) 1023 or 642 or −130 — to — 阴火蛇年 (female Fire-Snake) 1024 or 643 or −129