'Days' in the Bible

It was in the days of Ahasuerus (Xerxes) who reigned from India to Ethiopia (Cush) over 127 provinces,

in those days when King Ahasuerus sat on his royal throne which was at the citadel in Susa [the capital of the Persian Empire],

And he displayed the riches of his glorious kingdom and the splendor of his great majesty for many days, 180 days in all.

When these days were completed, the king held a banquet for all the people who were present at the citadel in Susa [the capital], from the greatest [in importance] to the least, a seven-day feast in the courtyard of the garden of the king’s palace.

In those days, while Mordecai was sitting at the king’s gate, Bigthan and Teresh, two of the king’s eunuchs who guarded the door, became angry and conspired to attack King Ahasuerus.

“All the king’s servants and the people of the king’s provinces know that for any man or woman who comes to the king to the inner court without being summoned, he has but one law, that he is to be put to death, unless the king holds out to him the golden scepter so that he may live. And as for me, I have not been summoned to come to the king for these [last] thirty days.”

“Go, gather all the Jews that are present in Susa, and observe a fast for me; do not eat or drink for three days, night or day. I and my maids also will fast in the same way. Then I will go in to [see] the king [without being summoned], which is against the law; and if I perish, I perish.”

because on those days the Jews rid themselves of their enemies, and as the month which was turned for them from grief to joy and from mourning into a holiday; that they should make them days of feasting and rejoicing and sending choice portions of food to one another and gifts to the poor.

Therefore they called these days Purim after the name Pur (lot). And because of all the instructions in this letter, and what they had faced in this regard and what had happened to them,

the Jews established and made it a custom for themselves and for their descendants and for all who joined them, so that they would not fail to celebrate these two days as it was written and at the appointed time annually.

So these days were to be remembered and celebrated throughout every generation, every family, every province and every city; and these days of Purim were not to cease from among the Jews, nor their memory fade from their descendants.

to establish these days of Purim [to be observed] at their appointed times, just as Mordecai the Jew and Queen Esther had established for them, and as they had established for themselves and for their descendants with instructions regarding their times of fasting and their lamentations (expressions of needing help).