'Year' in the Bible

In the first year of Cyrus king of Persia, the word of the Lord spoken through Jeremiah was fulfilled. The Lord put it into the mind of King Cyrus to issue a proclamation throughout his entire kingdom and to put it in writing:

In the second month of the second year after they arrived at God’s house in Jerusalem, Zerubbabel son of Shealtiel, Jeshua son of Jozadak, and the rest of their brothers, including the priests, the Levites, and all who had returned to Jerusalem from the captivity, began to build. They appointed the Levites who were 20 years old or more to supervise the work on the Lord’s house.

Now the construction of God’s house in Jerusalem had stopped and remained at a standstill until the second year of the reign of King Darius of Persia. >

However, in the first year of Cyrus king of Babylon, he issued a decree to rebuild the house of God.

In the first year of King Cyrus, he issued a decree concerning the house of God in Jerusalem: Let the house be rebuilt as a place for offering sacrifices, and let its original foundations be retained. Its height is to be 90 feet and its width 90 feet,

This house was completed on the third day of the month of Adar in the sixth year of the reign of King Darius.

Some of the Israelites, priests, Levites, singers, gatekeepers, and temple servants accompanied him to Jerusalem in the seventh year of King Artaxerxes.

Ezra came to Jerusalem in the fifth month, during the seventh year of the king.