In the first year of Darius ¹  son of Ahasuerus, ²  who was of Median descent and who had been ³  appointed king over the Babylonian ⁴  empire –

And in the first year of Darius the Mede, I ¹  stood to strengthen him and to provide protection for him.)

In the third ¹  year of the reign of King Jehoiakim of Judah, King Nebuchadnezzar ²  of Babylon advanced against Jerusalem ³  and laid it under siege. ⁴ 

In the first ¹  year of King Belshazzar of Babylon, Daniel had ²  a dream filled with visions ³  while he was lying on his bed. Then he wrote down the dream in summary fashion. ⁴ 

¹ In the third year ²  of King Belshazzar’s reign, a vision appeared to me, Daniel, after the one that had appeared to me previously. ³ 

in the first year of his reign ¹  I, Daniel, came to understand from the sacred books ²  that, according to the word of the LORD ³  disclosed to the prophet Jeremiah, the years for the fulfilling of the desolation of Jerusalem ⁴  were seventy in number.

¹ In the third ²  year of King Cyrus of Persia a message was revealed to Daniel (who was also called Belteshazzar). This message was true and concerned a great war. ³  He understood the message and gained insight by the vision.