Esther 1:3-4 ESV

3 in the third year of his reign 1he gave a feast for all his officials and servants. The army of Persia and Media and the nobles and governors of the provinces were before him,

References for Esther 1:3

4 while he showed the riches of his royal glory and the splendor and pomp of his greatness for many days, 180 days.