Albert Barnes Commentary Esther 2:1

"After these things, when the wrath of king Ahasuerus was pacified, he remembered Vashti, and what she had done, and what was decreed against her." — Esther 2:1 (ASV)

These events must belong to the time between the great assembly held at Susa in Xerxes’ third year (483 B.C.), and the departure of the monarch on his expedition against Greece in his fifth year, 481 B.C.