Leviticus 16 and Revelation 8 have parallels which one needs to consider. Leviticus 16 speaks about the day of atonement. I have added the words in colour which may be found in both sections of scripture.
12 Then he shall take a censer full of burning coals of fire from the altar before Yahuwah, with his hands full of sweet incense beaten fine, and bring it inside the veil.
13 And he shall put the incense on the fire before Yahuwah, that the cloud of incense may cover the mercy seat that is on the Testimony, lest he die.
14 He shall take some of the blood of the bull and sprinkle it with his finger on the mercy seat on the east side; and before the mercy seat he shall sprinkle some of the blood with his finger seven times.
1 When He opened the seventh seal, there was silence in heaven for about half an hour.
2 And I saw the seven angels who stand before Yahuwah, and to them were given seven trumpets.
3 Then another angel, having a golden censer, came and stood at the altar. He was given much incense, that he should offer it with the prayers of all the saints upon the golden altar which was before the throne.
4 And the smoke of the incense, with the prayers of the saints, ascended before Yahuwah from the angel’s hand. 5 Then the angel took the censer, filled it with fire from the altar, and threw it to the earth. And there were noises, thunderings, lightnings, and an earthquake.
6 So the seven angels who had the seven trumpets prepared themselves to sound.7 The first angel sounded: And hail and fire followed, mingled with blood, and they were thrown to the earth. And a third of the trees were burned up, and all green grass was burned up.
Zechariah 7 speaks of the day of atonement as well:
1 In the fourth year of [the reign of] King Darius [of Persia], the word of the Lord came to Zechariah on the fourth day of the ninth month, which is Chislev.
2 Now the people of Bethel had sent Sharezer and Regem-melech and their men to seek the favour of Yahuwah,
3 speaking to the priests who belong to the house of Yahuwah of hosts and to the prophets, saying, “[Now that I am returned from exile] shall I weep in the fifth month [mourning the destruction of the temple], and fast as I have done these many years [in Babylon]?”
4 Then the word of Yahuwah of hosts came to me (Zechariah), saying,
5 “Speak to all the people of the land and to the priests, saying,
‘When you fasted and mourned in the fifth and seventh months these seventy years [that you were in exile], was it actually for Me that you fasted?
6 When you eat and when you drink, do you not eat for yourselves and do you not drink for yourselves [to satisfy your own needs]?
7 Should you not hear the words which Yahuwah proclaimed by the former prophets, when Jerusalem was inhabited and prosperous along with her cities around her, and the South (the Negev) and the foothills were inhabited?’”
8 Then the word of Yahuwah came to Zechariah, saying,
9 “Thus has Yahuwah of hosts said, ‘Dispense true justice and practice kindness and compassion, to each other;
10 and do not oppress or exploit the widow or the fatherless, the stranger or the poor; and do not devise or even imagine evil in your hearts against one another.’
11 But they refused to listen and pay attention and turned a stubborn shoulder [stiffening themselves in resistance] and stopped up their ears.
12 They made their hearts [hard] like flint, so that they could not hear the law and the words which Yahuwah of hosts had sent by His Spirit through the former prophets. Therefore great wrath came from Yahuwah of hosts.
13 And just as He called and they would not listen, so they called and I would not listen,” says Yahuwah of hosts;
14 “but I scattered them with a storm wind among all the nations whom they have not known. Thus the land was desolate after they had gone, so that no one passed through or returned, for they [by their sins] had made the pleasant land desolate and deserted.’”
As well as Isaiah 58 where it is even clearer:
1 “Cry aloud, spare not;
Lift up your voice like a trumpet;
Tell My people their transgression,
And the house of Jacob their sins.
2 Yet they seek Me daily,
And delight to know My ways,
As a nation that did righteousness,
And did not forsake the ordinance of their Elohim.
They ask of Me the ordinances of justice;
They take delight in approaching Elohim.
3 ‘Why have we fasted,’ they say, ‘and You have not seen?
Why have we afflicted our souls, and You take no notice?’
“In fact, in the day of your fast you find pleasure,
And exploit all your laborers.
4 Indeed you fast for strife and debate,
And to strike with the fist of wickedness.
You will not fast as you do this day,
To make your voice heard on high.
5 Is it a fast that I have chosen,
A day for a man to afflict his soul?
Is it to bow down his head like a bulrush,
And to spread out sackcloth and ashes?
Would you call this a fast,
And an acceptable day to Yahuwah?
6 “Is this not the fast that I have chosen:
To loose the bonds of wickedness,
To undo the heavy burdens,
To let the oppressed go free,
And that you break every yoke?
7 Is it not to share your bread with the hungry,
And that you bring to your house the poor who are cast out;
When you see the naked, that you cover him,
And not hide yourself from your own flesh?
8 Then your light shall break forth like the morning,
Your healing shall spring forth speedily,
And your righteousness shall go before you;
The glory of Yahuwah shall be your rear guard.
9 Then you shall call, and Yahuwah will answer;
You shall cry, and He will say, ‘Here I am.’
“If you take away the yoke from your midst,
The pointing of the finger, and speaking wickedness,
10 If you extend your soul to the hungry
And satisfy the afflicted soul,
Then your light shall dawn in the darkness,
And your darkness shall be as the noonday.
11 Then Yauwah will guide you continually,
And satisfy your soul in drought,
And strengthen your bones;
You shall be like a watered garden,
And like a spring of water, whose waters do not fail.
12 Those from among you
Shall build the old waste places;
You shall raise up the foundations of many generations;
And you shall be called the Repairer of the Breach,
The Restorer of Streets to Dwell In.
13 “If you turn away your foot from the Sabbath,
From doing your pleasure on My holy day,
And call the Sabbath a delight,
The holy day of Yahuwah honourable,
And shall honour Him, not doing your own ways,
Nor finding your own pleasure,
Nor speaking your own words,
14 Then you shall delight yourself in Yahuwah;
And I will cause you to ride on the high hills of the earth,
And feed you with the heritage of Jacob your father.
The mouth of Yahuwah has spoken.”
And in Revelation 12 we see the same time spoken of in Revelation 8, from a different view. The time of trouble.
1 Now a great sign appeared in heaven: a woman clothed with the sun, with the moon under her feet, and on her head a garland of twelve stars. 2 Then being with child, she cried out in labor and in pain to give birth.
3 And another sign appeared in heaven: behold, a great, fiery red dragon having seven heads and ten horns, and seven diadems on his heads. 4 His tail drew a third of the stars of heaven and threw them to the earth. And the dragon stood before the woman who was ready to give birth, to devour her Child as soon as it was born. 5 She bore a male Child who was to rule all nations with a rod of iron. And her Child was caught up to God and His throne. 6 Then the woman fled into the wilderness, where she has a place prepared by God, that they should feed her there one thousand two hundred and sixty days.
13 Now when the dragon saw that he had been cast to the earth, he persecuted the woman who gave birth to the male Child. 14 But the woman was given two wings of a great eagle, that she might fly into the wilderness to her place, where she is nourished for a time and times and half a time, from the presence of the serpent. 15 So the serpent spewed water out of his mouth like a flood after the woman, that he might cause her to be carried away by the flood. 16 But the earth helped the woman, and the earth opened its mouth and swallowed up the flood which the dragon had spewed out of his mouth. 17 And the dragon was enraged with the woman, and he went to make war with the rest of her offspring, who keep the commandments of Yahuwah and have the testimony of Yahushua haMaschiach.