'Two and thirtieth' in the Bible

Moreover, from the time that I was appointed to be their governor in the land of Judah, from the twentieth year even to the two and thirtieth year of Artaxerxes the king, that is, twelve years, I and my brethren have not eaten the bread of the governor.

But in all this time I was not at Jerusalem: for in the two and thirtieth year of Artaxerxes king of Babylon I came to the king, and after certain days I obtained leave of the king: