257

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Millennium: 1st millennium
Centuries: 2nd century3rd century4th century
Decades: 220s  230s  240s  – 250s –  260s  270s  280s
Years: 254 255 256257258 259 260
257 by topic
Politics
State leadersSovereign states
Birth and death categories
BirthsDeaths
Establishment and disestablishment categories
EstablishmentsDisestablishments
257 in other calendars
Gregorian calendar 257
CCLVII
Ab urbe condita 1010
Armenian calendar N/A
Bahá'í calendar -1587 – -1586
Bengali calendar -336
Berber calendar 1207
Buddhist calendar 801
Burmese calendar -381
Byzantine calendar 5765 – 5766
Chinese calendar 丙子年十一月廿九日
(2893/2953-11-29)
— to —
丁丑年十一月初九日
(2894/2954-11-9)
Coptic calendar -27 – -26
Ethiopian calendar 249 – 250
Hebrew calendar 40174018
Hindu calendars
 - Vikram Samvat 312 – 313
 - Shaka Samvat 179 – 180
 - Kali Yuga 3358 – 3359
Holocene calendar 10257
Iranian calendar 365 BP – 364 BP
Islamic calendar 376 BH – 375 BH
Japanese calendar
Korean calendar 2590
Thai solar calendar 800

[edit] Events

[edit] By place

[edit] Roman Empire

[edit] By topic

[edit] Religion

  • August 30Pope Sixtus II succeeds Pope Stephen I as the 24th pope.
  • Valerian's persecution of Christians begins: his edict orders bishops and priests to sacrifice according to the pagan rituals, and prohibits Christians, under penalty of death, from meeting at the tombs of their deceased.

[edit] Births

[edit] Deaths