Acts 19:8

Then Paul went into the synagogue and spoke boldly there for three months, arguing persuasively about the kingdom of God.

Scripture: Berean Standard Bible (BSB), public domain

ON THE MAP

WHEN

c. AD 52-57

counted from the text

WHO RULED

MEANWHILE

AD 51-52 Achaia

Gallio is proconsul of Achaia

The Delphi inscription dates his term, and with it the only fixed date in Paul's life.
AD 54 Italy

Nero becomes emperor

The Caesar to whom Paul will appeal in Acts 25:11.

SOURCES

date — The third journey; Acts 19:8-10 gives three months and then two years in Ephesus.
Claudius — Suetonius, Claudius; Tacitus, Annals XI-XII
Gallio — Delphi inscription (SIG 801d), which dates his term; Acts 18:12. It is the only fixed date in Paul's chronology.
Nero — Tacitus, Annals XIII-XVI; Suetonius, Nero
Herod Agrippa II — Josephus, Jewish War II; Antiquities XX
Antonius Felix — Josephus, Antiquities XX.7-8; Tacitus, Annals XII.54
Gallio is proconsul of Achaia — Delphi inscription (SIG 801d); Acts 18:12
Nero becomes emperor — Tacitus, Annals XII.69; Suetonius, Nero 8