| Millennium: | 1st Millennium |
|---|---|
| Centuries: | 6th cent. – 7th cent. – 8th cent. |
| Decades: | 640s 650s 660s – 670s – 680s 690s 700s |
| Years: | 674 675 676 – 677 – 678 679 680 |
| Gregorian calendar | 677 DCLXXVII |
| Ab urbe condita | 1430 |
| Armenian calendar | 126 ԹՎ ՃԻԶ |
| Assyrian calendar | 5427 |
| Bengali calendar | 84 |
| Berber calendar | 1627 |
| Buddhist calendar | 1221 |
| Burmese calendar | 39 |
| Byzantine calendar | 6185–6186 |
| Chinese calendar | 丙子年 (Fire Rat) 3373 or 3313 — to — 丁丑年 (Fire Ox) 3374 or 3314 |
| Coptic calendar | 393–394 |
| Discordian calendar | 1843 |
| Ethiopian calendar | 669–670 |
| Hebrew calendar | 4437–4438 |
| Hindu calendars | |
| - Vikram Samvat | 733–734 |
| - Shaka Samvat | 598–599 |
| - Kali Yuga | 3777–3778 |
| Holocene calendar | 10677 |
| Iranian calendar | 55–56 |
| Islamic calendar | 57–58 |
| Japanese calendar | N/A |
| Javanese calendar | 569–570 |
| Julian calendar | 677 DCLXXVII |
| Korean calendar | 3010 |
| Minguo calendar | 1235 before ROC 民前1235年 |
| Nanakshahi calendar | −791 |
| Seleucid era | 988/989 AG |
| Thai solar calendar | 1219–1220 |
The year 677 BC