|Centuries:||1st century BC – 1st century – 2nd century|
|Decades:||0s BC 0s 10s – 20s – 30s 40s 50s|
|Years:||21 22 23 – 24 – 25 26 27|
|24 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||777|
|Chinese calendar||癸未年 (Water Goat)
2720 or 2660
— to —
甲申年 (Wood Monkey)
2721 or 2661
|Coptic calendar||−260 – −259|
|- Vikram Samvat||80–81|
|- Shaka Samvat||N/A|
|- Kali Yuga||3125–3126|
|Iranian calendar||598 BP – 597 BP|
|Islamic calendar||616 BH – 615 BH|
|Minguo calendar||1888 before ROC
|Seleucid era||335/336 AG|
|Thai solar calendar||566–567|
Year 24 (XXIV) was a leap year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Cethegus and Varro (or, less frequently, year 777 Ab urbe condita). The denomination 24 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- The Roman war against Numidia and Mauretania ends with their annexation.
- Servius Cornelius Cethegus and Lucius Visellius Varro become consuls.
- Charmides becomes Archon of Athens.
- Tacfarinas' revolt in Africa is repressed.