Overview

AD 25 (25 AD) was a year in the 1st century of the Common Era. In the Julian calendar it was a common year that began on a Monday. In Roman practice it was identified by the names of the two sitting consuls, referred to historically as the "Year of the Consulship of Lentulus and Agrippa." Later historiography places the year within the Anno Domini system now used for Christian-era dating. For calendar details see Julian calendar and general era conventions at 1st century.

Calendar and naming conventions

Roman years were commonly dated by the pair of consuls in office rather than by a sequential number. The consular formula remained a practical tool for dating official acts and documents across the Roman world. Medieval and modern historians retroactively assign the label "AD 25" using the Anno Domini era, and astronomical or chronological studies may record the year's starting weekday on the Julian scheme. For conversion and reference tools see calendar resources.

Notable developments

  • Roman Empire: Tiberius was emperor; local administration and senatorial politics continued to shape provincial affairs. The consuls Lentulus and Agrippa gave their names to the year in Roman records.
  • China: A decisive event of AD 25 was the rise of Liu Xiu, who declared himself Emperor Guangwu and founded what is conventionally called the Eastern Han dynasty. His consolidation of power restored centralized Han rule after a period of civil war and fragmentation.

Importance and legacy

Although not abundant in surviving single-year chronicles, AD 25 is notable for marking a turning point in Chinese history with the restoration of the Han imperial line, an event that shaped East Asian politics and culture for generations. In the West, the year's record is typical of the imperial Roman era, where political continuity and administrative practices persisted under Tiberian rule. The way the year is referred to illustrates differences between contemporary dating systems and later chronological frameworks.

Further reading

For more on the calendars and chronology of this period consult the linked resources above and specialized histories of the early Roman Empire and the Eastern Han restoration.