Calendar overview 828
|Einhard mentions the cities of Eschweiler and Wiesbaden for the first time .|
|828 in other calendars|
|Armenian calendar||276/277 (turn of the year July)|
|Buddhist calendar||1371/72 (southern Buddhism); 1370/71 (alternative calculation according to Buddha's Parinirvana )|
|Chinese calendar||58th (59th) cycle|
|Chula Sakarat (Siam, Myanmar) / Dai calendar (Vietnam)||190/191 (turn of the year April)|
|Iranian calendar||206/207 (around March 21)|
|Islamic calendar||212/213 (March 21/22)|
|Jewish calendar||4588/89 (September 13-14)|
ab urbe condita MDLXXXI (1581)
Diocletian's era : 544/545 (New Year November)
|Seleucid era||Babylon: 1138/39 (turn of the year April)
Syria: 1139/40 (turn of the year October)
|Vikram Sambat (Nepalese Calendar)||884/885 (turn of the year April)|
Politics and world events
- Autumn: After the death of their commander Asad ibn al-Furāt al-Harrānī, presumably from the plague , the North African Aghlabids have to break off the siege of Syracuse after a year . They retreat to the southwest into the conquered Marsala , from where they continue their goal of conquering Sicily and spreading Islam in Italy .
- Boniface II becomes Margrave of Tuscany . He is also entrusted with the defense of Corsica against the Saracens .
- Revolt against the Arabs in Mérida .
- Eberhard becomes Margrave of Friuli.
- An imperial assembly takes place in the Pfalz Ingelheim .
First documentary mentions
- From Einhard be Eschweiler as Fundus Regius Ascvilare and Wiesbaden as Wisibada first mentioned in documents.
- Gangelt is first mentioned as Fundus Regius Gangludem and Münzesheim as Muncinesheim .
- Wittnau and Würenlingen are first mentioned in a document.
science and technology
- Foundation of the Academy of Sciences in Baghdad
- January 31st : During the reign of Doge Giustiniano Particiaco , the alleged bones of the Evangelist Mark came to Venice after, according to legend, they were smuggled out of Alexandria by two Venetian merchants. The Republic of Venice called from that date Serenissima Repubblica di San Marco . Mark replaces Saint Theodore as patron saint, and the heraldic animal of the republic becomes the symbol of the evangelist, the lion with an open book and the saying of Mark's vision. The construction of the Basilica di San Marco begins.
- In Nitra , the capital of the Principality of Neutra , a church is built on the initiative of the Salzburg bishop Adalram . This is the first sign of the spread of Christianity among the Slavs.
- September 8 : Ali an-Naqi , Imam of the Imamites († 868 )
- Abū Hanīfa Ahmad ibn Dāwūd ad-Dīnawarī , Kurdish botanist, historian, geographer, astronomer and mathematician († 889 )
- Hildegard , Franconian noblewoman, daughter of Ludwig the German, abbess of the Münsterschwarzach monastery († 856 )
- around 828: Ibn Qutaiba , Sunni scholar in the Abbasid Empire († 889 )
- Asad ibn al-Furāt al-Harrānī , Islamic theologian and legal scholar, general of the Aghlabids (* 759 )
- Bertha , Carolingian nobleman (* 775 )
- Idris II , Moroccan ruler (* 791 )
- Nikephorus I , Patriarch of Constantinople (* around 757 )