Neh 2:6 And the king said to me ( the queen sitting beside him), “How long will you be gone, and when will you return?” So it pleased the king to send me when I had given him a time.
Est 9:27 the Jews firmly obligated themselves and their offspring and all who joined them, that without fail they would keep these two days according to what was written and at the time appointed every year,
Est 9:31 that these days of Purim should be observed at their appointed seasons, as Mordecai the Jew and Queen Esther obligated them, and as they had obligated themselves and their offspring, with regard to their fasts and their lamenting.

Ecc 3:1 For everything there is a season, and a time for every matter under heaven:

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