# 255

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This article is about the year 255. For the number, see [255 (number)](/source/255_(number)).

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Calendar year

Years Millennium 1st millennium Centuries 2nd century 3rd century 4th century Decades 230s 240s 250s 260s 270s Years 252 253 254 255 256 257 258 v t e

255 by topic Leaders Political entities State leaders Religious leaders Categories Births Deaths v t e

255 in various calendars Gregorian calendar 255 CCLV Ab urbe condita 1008 Assyrian calendar 5005 Balinese saka calendar 176–177 Bengali calendar −339 – −338 Berber calendar 1205 Buddhist calendar 799 Burmese calendar −383 Byzantine calendar 5763–5764 Chinese calendar 甲戌年 (Wood Dog) 2952 or 2745 — to — 乙亥年 (Wood Pig) 2953 or 2746 Coptic calendar −29 – −28 Discordian calendar 1421 Ethiopian calendar 247–248 Hebrew calendar 4015–4016 Hindu calendars - Vikram Samvat 311–312 - Shaka Samvat 176–177 - Kali Yuga 3355–3356 Holocene calendar 10255 Iranian calendar 367 BP – 366 BP Islamic calendar 378 BH – 377 BH Javanese calendar 134–135 Julian calendar 255 CCLV Korean calendar 2588 Minguo calendar 1657 before ROC 民前1657年 Nanakshahi calendar −1213 Seleucid era 566/567 AG Thai solar calendar 797–798 Tibetan calendar ཤིང་ཕོ་ཁྱི་ལོ་ (male Wood-Dog) 381 or 0 or −772 — to — ཤིང་མོ་ཕག་ལོ་ (female Wood-Boar) 382 or 1 or −771

Year **255** (**[CCLV](/source/Roman_numerals)**) was a [common year starting on Monday](/source/Common_year_starting_on_Monday) of the [Julian calendar](/source/Julian_calendar). At the time, it was known in Rome as the **Year of the Consulship of Valerianus and Gallienus** (or, less frequently, **year 1008 *[Ab urbe condita](/source/Ab_urbe_condita)***). The denomination 255 for this year has been used since the early medieval period, when the [Anno Domini](/source/Anno_Domini) [calendar era](/source/Calendar_era) became the prevalent method in Europe for naming years.

## Events

### By place

#### China

- [Sima Shi](/source/Sima_Shi) quells [Guanqiu Jian](/source/Guanqiu_Jian) and [Wen Qin](/source/Wen_Qin)'s [rebellion](/source/Guanqiu_Jian_and_Wen_Qin's_Rebellion).

- [March 23](/source/March_23) – Sima Shi passes away.

- [Sima Zhao](/source/Sima_Zhao), Sima Shi's younger brother, inherits his brother's authority.

### By topic

#### Science

- [Ma Jun](/source/Ma_Jun_(mechanical_engineer)), Chinese mechanical engineer from [Cao Wei](/source/Cao_Wei), invents the [south-pointing chariot](/source/South-pointing_chariot), a path-finding directional [compass](/source/Compass) vehicle that uses a [differential gear](/source/Differential_(mechanical_device)), not [magnetics](/source/Magnetics).

## Births

- [January 6](/source/January_6) – [Marcellus I](/source/Pope_Marcellus_I), bishop of [Rome](/source/Ancient_Rome) (d. [309](/source/309))

- [Dorotheus of Tyre](/source/Dorotheus_of_Tyre), Syrian bishop and [martyr](/source/Martyr) (d. [362](/source/362))

- [Zhang Gui](/source/Zhang_Gui), Chinese governor of the [Jin Dynasty](/source/Jin_dynasty_(265%E2%80%93420)) (d. [314](/source/314))

- [Zuo Fen](/source/Zuo_Fen), Chinese poet of the [Western Jin Dynasty](/source/Jin_dynasty_(266%E2%80%93420)) (d. [300](/source/300))

- [Saint Helena](/source/Helena%2C_mother_of_Constantine_I), Roman empress who was the reputed discoverer of [Christ’s cross](/source/True_Cross) and mother of [Emperor Constantine](/source/Constantine_the_Great) (d. 318)

## Deaths

- [February 23](/source/February_23) – [Guo Huai](/source/Guo_Huai) (or **Boji**), Chinese general

- [March 16](/source/March_16) – [Guanqiu Jian](/source/Guanqiu_Jian), Chinese general and politician

- [March 23](/source/March_23) – [Sima Shi](/source/Sima_Shi), Chinese general and [regent](/source/Regent) (b. [208](/source/208))[1]

- [Fu Gu](/source/Fu_Gu) (or **Lanshi**), Chinese official and politician (b. [209](/source/209))

- [Liu Zan](/source/Liu_Zan) (or **Zhengming**), Chinese general (b. [183](/source/183))

- [Sun Luyu](/source/Sun_Luyu) (or **Xiaohu**), Chinese princess

## References

1. **[^](#cite_ref-1)** Declercq, Dominik (1998). *Writing against the state: political rhetorics in third and fourth century China*. Leiden. p. 123. [ISBN](/source/ISBN_(identifier)) [9004103767](https://en.wikipedia.org/wiki/Special:BookSources/9004103767).{{[cite book](https://en.wikipedia.org/wiki/Template:Cite_book)}}: CS1 maint: location missing publisher ([link](https://en.wikipedia.org/wiki/Category:CS1_maint:_location_missing_publisher))

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Adapted from the Wikipedia article [255](https://en.wikipedia.org/wiki/255) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/255?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.