309 BC

309 BC in various calendars
Gregorian calendar	309 BC; CCCIX BC
Ab urbe condita	445
Ancient Egypt era	XXXIII dynasty, 15
- Pharaoh	Ptolemy I Soter, 15
Ancient Greek era	117th Olympiad, year 4
Assyrian calendar	4442
Balinese saka calendar	N/A
Bengali calendar	−901
Berber calendar	642
Buddhist calendar	236
Burmese calendar	−946
Byzantine calendar	5200–5201
Chinese calendar	辛亥年 (Metal Pig); 2389 or 2182; — to —; 壬子年 (Water Rat); 2390 or 2183
Coptic calendar	−592 – −591
Discordian calendar	858
Ethiopian calendar	−316 – −315
Hebrew calendar	3452–3453
Hindu calendars
- Vikram Samvat	−252 – −251
- Shaka Samvat	N/A
- Kali Yuga	2792–2793
Holocene calendar	9692
Iranian calendar	930 BP – 929 BP
Islamic calendar	959 BH – 958 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2025
Minguo calendar	2220 before ROC; 民前2220年
Nanakshahi calendar	−1776
Seleucid era	3/4 AG
Thai solar calendar	234–235
Tibetan calendar	阴金猪年; (female Iron-Pig); −182 or −563 or −1335; — to —; 阳水鼠年; (male Water-Rat); −181 or −562 or −1334

Millennium:	1st millennium BC
Centuries:	5th century BC; 4th century BC ; 3rd century BC;
Decades:	320s BC; 310s BC; 300s BC ; 290s BC; 280s BC;
Years:	312 BC; 311 BC; 310 BC; 309 BC ; 308 BC; 307 BC; 306 BC;

Year 309 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Dictatorship of Cursor (or, less frequently, year 445 Ab urbe condita). The denomination 309 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.

Gregorian calendar	309 BC CCCIX BC
Ab urbe condita	445
Ancient Egypt era	XXXIII dynasty, 15
- Pharaoh	Ptolemy I Soter, 15
Ancient Greek era	117th Olympiad, year 4
Assyrian calendar	4442
Balinese saka calendar	N/A
Bengali calendar	−901
Berber calendar	642
Buddhist calendar	236
Burmese calendar	−946
Byzantine calendar	5200–5201
Chinese calendar	辛亥年 (Metal Pig) 2389 or 2182 — to — 壬子年 (Water Rat) 2390 or 2183
Coptic calendar	−592 – −591
Discordian calendar	858
Ethiopian calendar	−316 – −315
Hebrew calendar	3452–3453
Hindu calendars
- Vikram Samvat	−252 – −251
- Shaka Samvat	N/A
- Kali Yuga	2792–2793
Holocene calendar	9692
Iranian calendar	930 BP – 929 BP
Islamic calendar	959 BH – 958 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2025
Minguo calendar	2220 before ROC 民前2220年
Nanakshahi calendar	−1776
Seleucid era	3/4 AG
Thai solar calendar	234–235
Tibetan calendar	阴金猪年 (female Iron-Pig) −182 or −563 or −1335 — to — 阳水鼠年 (male Water-Rat) −181 or −562 or −1334