Genesis 1:23 And the evening and the morning were the fifth day.
See the Typology of Day 5 in Telescopic Views
Numbers 7:36 On the fifth day Shelumiel the son of Zurishaddai, prince of the children of Simeon, did offer:
Numbers 29:26 And on the fifth day nine bullocks, two rams, and fourteen lambs of the first year without spot:
Judges 19:8 And he arose early in the morning on the fifth day to depart: and the damsel's father said, Comfort thine heart, I pray thee. And they tarried until afternoon, and they did eat both of them.
Ezekiel 1:1 Now it came to pass in the thirtieth year, in the fourth month, in the fifth day of the month, as I was among the captives by the river of Chebar, that the heavens were opened, and I saw visions of God.
Ezekiel 1:2 In the fifth day of the month, which was the fifth year of king Jehoiachin's captivity,
Ezekiel 8:1 And it came to pass in the sixth year, in the sixth month, in the fifth day of the month, as I sat in mine house, and the elders of Judah sat before me, that the hand of the Lord GOD fell there upon me.
Ezekiel 33:21 And it came to pass in the twelfth year of our captivity, in the tenth month, in the fifth day of the month, that one that had escaped out of Jerusalem came unto me, saying, The city is smitten.
This page is under construction, but the above is a collection of all Bible verses containing the phrase "the fifth day".
The Numbers passages have to do with offerings at the dedication of the altar, and offerings during the feast of Tabernacles.
Under Telescopic View, there's a chart relating the 7 day View of the Bible 5th day. Yyou see "the fifth day" highlighted in green in the left column. The period which it symbolizes is noted in the right column. I reproduce that note here for convenient reference:
The Tribulation Age. This is a short age. Jesus said that "except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened." (Matthew 24:22) This short age is ruled over by the beast that comes out of the sea, and the spirits of the powers of the air.
The Judges passage in which this phrase occurs, relates one of the darkest episodes in the Israelite nation.
The Ezekiel passages are also speaking of the judgments of God over a rebellious people, even the house of Israel.
Taking them all together, the fifth day speaks of man starting well, but ultimately breaking the covenant with God, and inviting God's fierce judgments on himself.