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| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| AD 404 by topic |
|---|
| Leaders |
| Categories |
| Gregorian calendar | 404 CDIV |
| Ab urbe condita | 1157 |
| Assyrian calendar | 5154 |
| Balinese saka calendar | 325–326 |
| Bengali calendar | −189 |
| Berber calendar | 1354 |
| Buddhist calendar | 948 |
| Burmese calendar | −234 |
| Byzantine calendar | 5912–5913 |
| Chinese calendar | 癸卯年 (Water Rabbit) 3101 or 2894 — to — 甲辰年 (Wood Dragon) 3102 or 2895 |
| Coptic calendar | 120–121 |
| Discordian calendar | 1570 |
| Ethiopian calendar | 396–397 |
| Hebrew calendar | 4164–4165 |
| Hindu calendars | |
| - Vikram Samvat | 460–461 |
| - Shaka Samvat | 325–326 |
| - Kali Yuga | 3504–3505 |
| Holocene calendar | 10404 |
| Iranian calendar | 218 BP – 217 BP |
| Islamic calendar | 225 BH – 224 BH |
| Javanese calendar | 287–288 |
| Julian calendar | 404 CDIV |
| Korean calendar | 2737 |
| Minguo calendar | 1508 before ROC 民前1508年 |
| Nanakshahi calendar | −1064 |
| Seleucid era | 715/716 AG |
| Thai solar calendar | 946–947 |
| Tibetan calendar | 阴水兔年 (female Water-Rabbit) 530 or 149 or −623 — to — 阳木龙年 (male Wood-Dragon) 531 or 150 or −622 |
Year 404 (CDIV) was a leap year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Honorius and Aristaenetus (or, less frequently, year 1157 Ab urbe condita). The denomination 404 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.