311 BC

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Millennium: 1st millennium BC
311 BC in various calendars
Gregorian calendar 311 BC
Ab urbe condita 443
Ancient Egypt era XXXIII dynasty, 13
- Pharaoh Ptolemy I Soter, 13
Ancient Greek era 117th Olympiad, year 2
Assyrian calendar 4440
Balinese saka calendar N/A
Bengali calendar −903
Berber calendar 640
Buddhist calendar 234
Burmese calendar −948
Byzantine calendar 5198–5199
Chinese calendar 己酉(Earth Rooster)
2386 or 2326
    — to —
庚戌年 (Metal Dog)
2387 or 2327
Coptic calendar −594 – −593
Discordian calendar 856
Ethiopian calendar −318 – −317
Hebrew calendar 3450–3451
Hindu calendars
 - Vikram Samvat −254 – −253
 - Shaka Samvat N/A
 - Kali Yuga 2790–2791
Holocene calendar 9690
Iranian calendar 932 BP – 931 BP
Islamic calendar 961 BH – 960 BH
Javanese calendar N/A
Julian calendar N/A
Korean calendar 2023
Minguo calendar 2222 before ROC
Nanakshahi calendar −1778
Seleucid era 1/2 AG
Thai solar calendar 232–233
Tibetan calendar 阴土鸡年
(female Earth-Rooster)
−184 or −565 or −1337
    — to —
(male Iron-Dog)
−183 or −564 or −1336

Year 311 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Brutus and Barbula (or, less frequently, year 443 Ab urbe condita). The denomination 311 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]

Seleucid Empire[edit]

Asia Minor and Syria[edit]

  • Ptolemy tries to occupy Syria. However, Demetrius Poliorcetes wins a battle over Ptolemy's forces and Antigonus enters Syria in force. So, after only a few months, Ptolemy evacuates his forces from Syria.
  • In view of the threat by Seleucus to his control of the East, Antigonus decides to make peace with all of his adversaries, except Seleucus, who now holds Babylon. All of the diadochi confirm the existing boundaries and the freedom of the Greek cities. Ptolemy and Lysimachus are confirmed as satraps of Egypt and Thrace, respectively, and Antigonus and Cassander are confirmed as commanders of the army in Asia and Europe. Antigonus, no longer regent but now titled the strategos (officer in charge) of the whole of Asia, rules in Syria from the Hellespont to the Euphrates, including Asia Minor.
  • It is agreed by all parties that the young king Alexander IV of Macedon, son of Alexander the Great, will become king of the whole empire when he comes of age in six years' time.
  • The peace agreement between the diadochi is soon violated. On the pretext that garrisons have been placed in some of the free Greek cities by Antigonus, Ptolemy and Cassander renew hostilities against him.