304

Millennium: 1st millennium
Centuries:
Decades:
Years:
304 in various calendars
Gregorian calendar304
CCCIV
Ab urbe condita1057
Assyrian calendar5054
Balinese saka calendar225–226
Bengali calendar−289
Berber calendar1254
Buddhist calendar848
Burmese calendar−334
Byzantine calendar5812–5813
Chinese calendar癸亥年 (Water Pig)
3001 or 2794
    — to —
甲子年 (Wood Rat)
3002 or 2795
Coptic calendar20–21
Discordian calendar1470
Ethiopian calendar296–297
Hebrew calendar4064–4065
Hindu calendars
 - Vikram Samvat360–361
 - Shaka Samvat225–226
 - Kali Yuga3404–3405
Holocene calendar10304
Iranian calendar318 BP – 317 BP
Islamic calendar328 BH – 327 BH
Javanese calendar184–185
Julian calendar304
CCCIV
Korean calendar2637
Minguo calendar1608 before ROC
民前1608年
Nanakshahi calendar−1164
Seleucid era615/616 AG
Thai solar calendar846–847
Tibetan calendar阴水猪年
(female Water-Pig)
430 or 49 or −723
    — to —
阳木鼠年
(male Wood-Rat)
431 or 50 or −722
Saint Vincent of Saragossa

Year 304 (CCCIV) was a leap year starting on Saturday (link will display the full calendar) of the Julian calendar. It was known in the Roman Empire as the Year of the Consulship of Diocletian and Maximian (or, less frequently, year 1057 Ab urbe condita). The denomination 304 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.