| Millennium: | 4th Millennium BC |
|---|---|
| Centuries: | 36th cent. BC – 35th cent. BC – 34th cent. BC |
| Decades: | 3430s BC 3420s BC 3410s BC – 3400s BC – 3390s BC 3380s BC 3370s BC |
| Years: | 3408 BC 3407 BC 3406 BC – 3405 BC – 3404 BC 3403 BC 3402 BC |
| Gregorian calendar | 3405 MMMCDV |
| Ab urbe condita | 4158 |
| Armenian calendar | 2854 ԹՎ ՍՊԾԴ |
| Assyrian calendar | 8155 |
| Bahá'í calendar | 1561–1562 |
| Bengali calendar | 2812 |
| Berber calendar | 4355 |
| British Regnal year | N/A |
| Buddhist calendar | 3949 |
| Burmese calendar | 2767 |
| Byzantine calendar | 8913–8914 |
| Chinese calendar | 甲辰年 (Wood Dragon) 6101 or 6041 — to — 乙巳年 (Wood Snake) 6102 or 6042 |
| Coptic calendar | 3121–3122 |
| Discordian calendar | 4571 |
| Ethiopian calendar | 3397–3398 |
| Hebrew calendar | 7165–7166 |
| Hindu calendars | |
| - Vikram Samvat | 3461–3462 |
| - Shaka Samvat | 3326–3327 |
| - Kali Yuga | 6505–6506 |
| Holocene calendar | 13405 |
| Igbo calendar | 2405–2406 |
| Iranian calendar | 2783–2784 |
| Islamic calendar | 2868–2869 |
| Japanese calendar | Heisei 1417 (平成１４１７年) |
| Javanese calendar | 3380–3381 |
| Juche calendar | 1494 |
| Julian calendar | Gregorian minus 24 days |
| Korean calendar | 5738 |
| Minguo calendar | ROC 1494 民國1494年 |
| Nanakshahi calendar | 1937 |
| Thai solar calendar | 3948 |
| Unix time | 45284227200–45315763199 |
The year 3405 BC