Adar I 1 - Rosh Hodesh Adar I

It happened in the days of Ahasuerus--that Ahasuerus who reigned over a hundred and twenty-seven provinces from India to Nubia. In those days, when King Ahasuerus occupied the royal throne in the fortress Shushan, in the third year of his reign, he gave a banquet for all the officials and courtiers--the administration of Persia and Media, the nobles and the governors of all the provinces in his service. For no fewer than a hundred and eighty days he displayed the vast riches of his kingdom and the splendid glory of his majesty. At the end of this period, the king gave banquet for seven days in the court of the king's palace garden for all the people who lived in the fortress Shushan, high and low alike. . . . and there were couches of gold and silver on a pavement of marble, alabaster, mother of pearl, and mosaics. Royal wine was served in abundance . . . . And the rule for the drinking was, "No restrictions!" In addition, Queen Vashti gave a banquet for women, in the royal palace of King Ahasuerus. Esther 1:1-9. The Writings--Kethubim: A new translation of The Holy Scriptures according to the Masoretic text, Third Section, The Jewish Publication Society of America, Philadelphia, 1982. Crayon on textured card stock.

As the month of Adar enters, one should increase in joy (Taanis 29a). Here's a drash on this Talmud quote (half way down the page).
Rosh Hodesh is the new moon for a new month -- in this case, Adar I. Because this is leap year, we have Adar I and Adar II.