After failing to defeat the Persian fleet at Artemesion opposite Thermopylai, the Greek fleet moved south and regrouped at Salamis near Athens for another try. They had to defeat the Persian fleet as it threatened the southern Greek cities, who kept their armies at home to protect them.
When the Persian fleet was defeated at Salamis, the Persians faced a winter in a poor country, and as they could no longer protect at sea their supply fleets coming from Asia Minor, they had to send half their army home as they couldn't feed them.
The following spring, with the maritime threat gone, the southern Greek cities sent out their armies to join up and defeat the reduced Persian army at Plataia. At the same time, the Greek fleet finished of the remainder of the Persian fleet defeated at Salamis where it was holed up at Mykale.
Defeat of the Persian fleet was the key to the whole Greek strategy, and success at Salamis implemented it.
It was a sea battle. The Greek fleet assembled at the island of Salamis in preparation to fighting the Persian fleet.
The Battle of Salamis took place in the strait between Piraeus and Salamis Island, an island in the Saronic Gulf near Athens.
In the strait between the island of Salamis and Athens.
In the bay between the island of Salamis and Athens.
In the strait between Salamis Island and Athens.
Battle of Salamis happened in -480.
Naval Battle of Salamis (29 September 480): important battle during the Persian War, in which the Greek allies defeated the Persian navy .
They were major steps in persuading the Persian Empire to stop trying to impose peace in the Eastern Mediterranean.
It was a sea battle. The Greek fleet assembled at the island of Salamis in preparation to fighting the Persian fleet.
480
The Battle of Salamis took place in the strait between Piraeus and Salamis Island, an island in the Saronic Gulf near Athens.
In the strait between the island of Salamis and Athens.
In the bay between the island of Salamis and Athens.
Xerxes I of Persia was defeated in the naval battle of Salamis by Athenian admiral Themistocles .
In the strait between Salamis Island and Athens.
Approximately 1 month! :D The question you mean is : how long did the battle of salamis last? ;)
Between the Island of Salamis and the Greek mainland near Athens.