| Millennium: | 4th Millennium BC |
|---|---|
| Centuries: | 41st cent. BC – 40th cent. BC – 39th cent. BC |
| Decades: | 3930s BC 3920s BC 3910s BC – 3900s BC – 3890s BC 3880s BC 3870s BC |
| Years: | 3908 BC 3907 BC 3906 BC – 3905 BC – 3904 BC 3903 BC 3902 BC |
| Gregorian calendar | 3905 MMMCMV |
| Ab urbe condita | 4658 |
| Armenian calendar | 3354 ԹՎ ՎՅԾԴ |
| Assyrian calendar | 8655 |
| Bahá'í calendar | 2061–2062 |
| Bengali calendar | 3312 |
| Berber calendar | 4855 |
| British Regnal year | N/A |
| Buddhist calendar | 4449 |
| Burmese calendar | 3267 |
| Byzantine calendar | 9413–9414 |
| Chinese calendar | 甲子年 (Wood Rat) 6601 or 6541 — to — 乙丑年 (Wood Ox) 6602 or 6542 |
| Coptic calendar | 3621–3622 |
| Discordian calendar | 5071 |
| Ethiopian calendar | 3897–3898 |
| Hebrew calendar | 7665–7666 |
| Hindu calendars | |
| - Vikram Samvat | 3961–3962 |
| - Shaka Samvat | 3826–3827 |
| - Kali Yuga | 7005–7006 |
| Holocene calendar | 13905 |
| Igbo calendar | 2905–2906 |
| Iranian calendar | 3283–3284 |
| Islamic calendar | 3384–3385 |
| Japanese calendar | Heisei 1917 (平成１９１７年) |
| Javanese calendar | 3896–3897 |
| Juche calendar | 1994 |
| Julian calendar | Gregorian minus 28 days |
| Korean calendar | 6238 |
| Minguo calendar | ROC 1994 民國1994年 |
| Nanakshahi calendar | 2437 |
| Thai solar calendar | 4448 |
| Unix time | 61062681600–61094217599 |
The year 3905 BC