263 BC

Millennium:	1st millennium BC
Centuries:	4th century BC 3rd century BC 2nd century BC
Decades:	280s BC 270s BC 260s BC 250s BC 240s BC
Years:	266 BC 265 BC 264 BC 263 BC 262 BC 261 BC 260 BC

263 BC in various calendars

Gregorian calendar	263 BC CCLXII BC
Ab urbe condita	491
Ancient Egypt era	XXXIII dynasty, 61
- Pharaoh	Ptolemy II Philadelphus, 21
Ancient Greek era	129th Olympiad, year 2
Assyrian calendar	4488
Bengali calendar	−855
Berber calendar	688
Buddhist calendar	282
Burmese calendar	−900
Byzantine calendar	5246–5247
Chinese calendar	丁酉年 (Fire Rooster) 2434 or 2374     — to — 戊戌年 (Earth Dog) 2435 or 2375
Coptic calendar	−546 – −545
Discordian calendar	904
Ethiopian calendar	−270 – −269
Hebrew calendar	3498–3499
Hindu calendars
- Vikram Samvat	−206 – −205
- Shaka Samvat	N/A
- Kali Yuga	2838–2839
Holocene calendar	9738
Iranian calendar	884 BP – 883 BP
Islamic calendar	911 BH – 910 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2071
Minguo calendar	2174 before ROC 民前2174年
Nanakshahi calendar	−1730
Seleucid era	49/50 AG
Thai solar calendar	280–281
This box:

Year 263 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Mesella and Crassus (or, less frequently, year 491 Ab urbe condita). The denomination 263 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.

...
Wikipedia