315 BC

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Millennium: 1st millennium BC
315 BC in various calendars
Gregorian calendar 315 BC
Ab urbe condita 439
Ancient Egypt era XXXIII dynasty, 9
- Pharaoh Ptolemy I Soter, 9
Ancient Greek era 116th Olympiad, year 2
Assyrian calendar 4436
Balinese saka calendar N/A
Bengali calendar −907
Berber calendar 636
Buddhist calendar 230
Burmese calendar −952
Byzantine calendar 5194–5195
Chinese calendar 乙巳(Wood Snake)
2382 or 2322
    — to —
丙午年 (Fire Horse)
2383 or 2323
Coptic calendar −598 – −597
Discordian calendar 852
Ethiopian calendar −322 – −321
Hebrew calendar 3446–3447
Hindu calendars
 - Vikram Samvat −258 – −257
 - Shaka Samvat N/A
 - Kali Yuga 2786–2787
Holocene calendar 9686
Iranian calendar 936 BP – 935 BP
Islamic calendar 965 BH – 964 BH
Javanese calendar N/A
Julian calendar N/A
Korean calendar 2019
Minguo calendar 2226 before ROC
Nanakshahi calendar −1782
Thai solar calendar 228–229
Tibetan calendar 阴木蛇年
(female Wood-Snake)
−188 or −569 or −1341
    — to —
(male Fire-Horse)
−187 or −568 or −1340

Year 315 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Cursor and Philo (or, less frequently, year 439 Ab urbe condita). The denomination 315 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]

Alexandrian Empire[edit]

  • Antigonus claims authority over most of Asia, seizes the treasury at Susa and enters Babylon, where Seleucus is governor. Seleucus flees to Ptolemy in Egypt and enters into a league with him, Lysimachus (the ruler of Thrace) and Cassander against Antigonus. This leads to the First Coalition War.
  • Peithon consolidates his power base in the eastern part of the Empire.
  • Polyperchon flees to the Peloponnesus, where he still controls a few strong points, and allies himself with Antigonus, who has by now fallen out with his former allies.
  • Antigonus drives out Cassander's Macedonian forces of occupation from the Greek islands and forms the island cities in the Aegean into the "League of the Islanders", preparatory to his invasion of Greece. His ally, the city of Rhodes, furnishes him with the necessary fleet.
  • The King of Epirus, Aeacides, faces a revolt from his people and they drive him from the kingdom. His son, Phyrrhus, who is then only two years old, is saved from being killed by some faithful servants. Cassander takes control of Epirus.
  • The Macedonian port city of Thessaloniki is founded by Cassander and named after his wife Thessalonike.


  • Ptolemy's armies fight supporters of Antigonus in Cyprus. Ptolemy is able to re-conquer the island.


In fiction[edit]


  • Aratus, Macedonian Greek mathematician, astronomer, meteorologist, botanist and poet (d. 240 BC)