| Millennium: | 4th Millennium BC |
|---|---|
| Centuries: | 41st cent. BC – 40th cent. BC – 39th cent. BC |
| Decades: | 3940s BC 3930s BC 3920s BC – 3910s BC – 3900s BC 3890s BC 3880s BC |
| Years: | 3920 BC 3919 BC 3918 BC – 3917 BC – 3916 BC 3915 BC 3914 BC |
| Gregorian calendar | 3917 MMMCMXVII |
| Ab urbe condita | 4670 |
| Armenian calendar | 3366 ԹՎ ՎՅԿԶ |
| Assyrian calendar | 8667 |
| Bahá'í calendar | 2073–2074 |
| Bengali calendar | 3324 |
| Berber calendar | 4867 |
| British Regnal year | N/A |
| Buddhist calendar | 4461 |
| Burmese calendar | 3279 |
| Byzantine calendar | 9425–9426 |
| Chinese calendar | 丙子年 (Fire Rat) 6613 or 6553 — to — 丁丑年 (Fire Ox) 6614 or 6554 |
| Coptic calendar | 3633–3634 |
| Discordian calendar | 5083 |
| Ethiopian calendar | 3909–3910 |
| Hebrew calendar | 7677–7678 |
| Hindu calendars | |
| - Vikram Samvat | 3973–3974 |
| - Shaka Samvat | 3838–3839 |
| - Kali Yuga | 7017–7018 |
| Holocene calendar | 13917 |
| Igbo calendar | 2917–2918 |
| Iranian calendar | 3295–3296 |
| Islamic calendar | 3396–3397 |
| Japanese calendar | Heisei 1929 (平成１９２９年) |
| Javanese calendar | 3908–3909 |
| Juche calendar | 2006 |
| Julian calendar | Gregorian minus 28 days |
| Korean calendar | 6250 |
| Minguo calendar | ROC 2006 民國2006年 |
| Nanakshahi calendar | 2449 |
| Thai solar calendar | 4460 |
| Unix time | 61441372800–61472908799 |
The year 3917 BC