'Appointed Time' in the Bible

"Let the {Israelites} observe the Passover at its appointed time.

On the fourteenth day of this month {at twilight} you will perform it at its appointed time according to all its decrees; and according to all its stipulations you will observe it."

And those men said to him, "[Although] we [are] unclean {by a dead person}, why are we hindered from presenting the offering of Yahweh at its appointed time in the midst of the {Israelites}?"

But the man who [is] clean and not on a journey, and he fails to observe the Passover, that person will be cut off from the people because he did not present the offering of Yahweh on its appointed time. That man will bear his guilt.

"And on the day of your joy and in your appointed times, at the beginning of your months, you will blow on the trumpets in addition to your burnt offerings and in addition to the sacrifices of your fellowship offerings. And they will be as a memorial for you {before} your God; I [am] Yahweh your God."

"Command the {Israelites} and say to them, '{You will be careful to present} my offering, my food of my offerings made by fire, of a fragrance of appeasement to me, at its appointed time.'

" 'You will present these to Yahweh at your appointed time, in addition to your vows and your freewill offerings, for your burnt offerings and for you grain offerings and for your libations and for your fellowship offerings.'"