428 BC

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Millennium: 1st millennium BC
428 BC in various calendars
Gregorian calendar428 BC
Ab urbe condita326
Ancient Egypt eraXXVII dynasty, 98
- PharaohArtaxerxes I of Persia, 38
Ancient Greek era88th Olympiad (victor
Assyrian calendar4323
Balinese saka calendarN/A
Bengali calendar−1020
Berber calendar523
Buddhist calendar117
Burmese calendar−1065
Byzantine calendar5081–5082
Chinese calendar壬子年 (Water Rat)
2269 or 2209
    — to —
癸丑年 (Water Ox)
2270 or 2210
Coptic calendar−711 – −710
Discordian calendar739
Ethiopian calendar−435 – −434
Hebrew calendar3333–3334
Hindu calendars
 - Vikram Samvat−371 – −370
 - Shaka SamvatN/A
 - Kali Yuga2673–2674
Holocene calendar9573
Iranian calendar1049 BP – 1048 BP
Islamic calendar1081 BH – 1080 BH
Javanese calendarN/A
Julian calendarN/A
Korean calendar1906
Minguo calendar2339 before ROC
Nanakshahi calendar−1895
Thai solar calendar115–116
Tibetan calendar阳水鼠年
(male Water-Rat)
−301 or −682 or −1454
    — to —
(female Water-Ox)
−300 or −681 or −1453

Year 428 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Cossus and Cincinnatus or Cincinnatus and Atratinus (or, less frequently, year 326 Ab urbe condita). The denomination 428 BC 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]


  • The chief city of Lesbos, Mytilene, revolts against Athenian rule. The Spartan admiral, Alcidas, leads 40 Peloponnesian alliance ships with the aim of assisting the inhabitants of Mytilene. However, the rebellion by Mytilene is crushed before his forces can arrive.
  • Despite encouragement from the Ionian leaders to engage the Athenians, Alcidas declines. Rather, Alcidas leads his fleet to Cyllene where the Spartans resolve to strengthen the fleet and send it to Corcyra where a revolution has broken out. Spartan leaders, Brasidas and Alcidas, then defeat a fleet of Corcyran ships. However, they retire when word reaches them that 60 Athenian ships from Leucas under the command of Eurymedon have been dispatched to intercept them.


By topic[edit]



  • Archytas, Greek philosopher, mathematician, astronomer, statesman, and strategist (d. 347 BC)



  1. ^ Suzuki, Jeff (2009). Mathematics in Historical Context. MAA. p. 24. ISBN 9780883855706.