The year 525 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 229 Ab urbe condita. The denomination 525 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.

Millennium: 1st millennium BC
525 BC in various calendars
Gregorian calendar525 BC
Ab urbe condita229
Ancient Egypt eraXXVII dynasty, 1
- PharaohCambyses II of Persia, 1
Ancient Greek era63rd Olympiad, year 4
Assyrian calendar4226
Balinese saka calendarN/A
Bengali calendar−1117
Berber calendar426
Buddhist calendar20
Burmese calendar−1162
Byzantine calendar4984–4985
Chinese calendar乙亥年 (Wood Pig)
2172 or 2112
    — to —
丙子年 (Fire Rat)
2173 or 2113
Coptic calendar−808 – −807
Discordian calendar642
Ethiopian calendar−532 – −531
Hebrew calendar3236–3237
Hindu calendars
 - Vikram Samvat−468 – −467
 - Shaka SamvatN/A
 - Kali Yuga2576–2577
Holocene calendar9476
Iranian calendar1146 BP – 1145 BP
Islamic calendar1181 BH – 1180 BH
Javanese calendarN/A
Julian calendarN/A
Korean calendar1809
Minguo calendar2436 before ROC
Nanakshahi calendar−1992
Thai solar calendar18–19
Tibetan calendar阴木猪年
(female Wood-Pig)
−398 or −779 or −1551
    — to —
(male Fire-Rat)
−397 or −778 or −1550


By placeEdit


  • Battle of Pelusium - Cambyses II of Persia conquers Egypt by painting cats and other animals sacred to the Egyptians on his soldiers' shields. The Egyptians run in fear of "harming" these animals. It is said that after the battle, Cambyses hurled cats in the faces of the Egyptians in scorn that they would sacrifice their country for the safety of their animals.[1]
  • Cambyses takes Psamtik III prisoner and treats him kindly until he tries to raise a revolt, at which point Psamtik is executed.[1]
  • The Twenty-sixth Dynasty ends, and the Twenty-seventh Dynasty begins.


  • September 17, 525 BC- Venus occult Antares the next such occurrence will not take place until November 17, 2400 AD.[2]




  1. ^ a b "The Battle of Pelusium: A Victory Decided by Cats". World History Encyclopedia.
  2. ^ Journal of the British Astronomical Association ISBN 978-1-345-66291-7 p. 155