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This article is about the year 305. For the number, see 305 (number). For other uses, see 305 (disambiguation).
Millennium: 1st millennium
Centuries: 3rd century4th century5th century
Decades: 270s  280s  290s  – 300s –  310s  320s  330s
Years: 302 303 304305306 307 308
305 by topic
State leadersSovereign states
Birth and death categories
Establishment and disestablishment categories
305 in other calendars
Gregorian calendar 305
Ab urbe condita 1058
Assyrian calendar 5055
Bengali calendar −288
Berber calendar 1255
Buddhist calendar 849
Burmese calendar −333
Byzantine calendar 5813–5814
Chinese calendar 甲子(Wood Rat)
3001 or 2941
    — to —
乙丑年 (Wood Ox)
3002 or 2942
Coptic calendar 21–22
Discordian calendar 1471
Ethiopian calendar 297–298
Hebrew calendar 4065–4066
Hindu calendars
 - Vikram Samvat 361–362
 - Shaka Samvat 227–228
 - Kali Yuga 3406–3407
Holocene calendar 10305
Iranian calendar 317 BP – 316 BP
Islamic calendar 327 BH – 326 BH
Julian calendar 305
Korean calendar 2638
Minguo calendar 1607 before ROC
Seleucid era 616/617 AG
Thai solar calendar 847–848

Year 305 (CCCV) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantius and Valerius (or, less frequently, year 1058 Ab urbe condita). The denomination 305 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.


By place[edit]

Roman Empire[edit]


  • The Daysan River floods Edessa.

By topic[edit]


  • Landowners dominate the Roman Empire and enjoy the title of senator, which exempts them from the crushing taxes imposed on the rest of the population. The Senate has lost all its power and the landowners almost never attend Senate sessions. Members of municipal senates (curiales or decuriones) are charged with the responsibility of collecting taxes and paying arrears; smaller landowners are held responsible for providing recruits for the Roman army and with keeping wastelands under cultivation.