| Millennium: | 2nd Millennium |
|---|---|
| Centuries: | 19th cent. – 20th cent. – 21st cent. |
| Decades: | 1870s 1880s 1890s – 1900s – 1910s 1920s 1930s |
| Years: | 1901 1902 1903 – 1904 – 1905 1906 1907 |
| Gregorian calendar | 1904 MCMIV |
| Ab urbe condita | 2657 |
| Armenian calendar | 1353 ԹՎ ՌՅԾԳ |
| Assyrian calendar | 6654 |
| Bahá'í calendar | 60–61 |
| Bengali calendar | 1311 |
| Berber calendar | 2854 |
| British Regnal year | 3 Edw. 7 – 4 Edw. 7 |
| Buddhist calendar | 2448 |
| Burmese calendar | 1266 |
| Byzantine calendar | 7412–7413 |
| Chinese calendar | 癸卯年 (Water Rabbit) 4600 or 4540 — to — 甲辰年 (Wood Dragon) 4601 or 4541 |
| Coptic calendar | 1620–1621 |
| Discordian calendar | 3070 |
| Ethiopian calendar | 1896–1897 |
| Hebrew calendar | 5664–5665 |
| Hindu calendars | |
| - Vikram Samvat | 1960–1961 |
| - Shaka Samvat | 1825–1826 |
| - Kali Yuga | 5004–5005 |
| Holocene calendar | 11904 |
| Igbo calendar | 904–905 |
| Iranian calendar | 1282–1283 |
| Islamic calendar | 1321–1322 |
| Japanese calendar | Meiji 37 (明治３７年) |
| Javanese calendar | 1833–1834 |
| Julian calendar | Gregorian minus 13 days |
| Korean calendar | 4237 |
| Minguo calendar | 8 before ROC 民前8年 |
| Nanakshahi calendar | 436 |
| Thai solar calendar | 2446–2447 |
The year 1904 BC
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