'Fifteenth' in the Bible
They took their journey from Elim, and all the congregation of the children of Israel came to the wilderness of Sin, which is between Elim and Sinai, on the fifteenth day of the second month after their departing out of the land of Egypt.
On the fifteenth day of the same month is the feast of unleavened bread to Yahweh. Seven days you shall eat unleavened bread.
"Speak to the children of Israel, and say, 'On the fifteenth day of this seventh month is the feast of tents for seven days to Yahweh.
"'So on the fifteenth day of the seventh month, when you have gathered in the fruits of the land, you shall keep the feast of Yahweh seven days: on the first day shall be a solemn rest, and on the eighth day shall be a solemn rest.
On the fifteenth day of this month shall be a feast: seven days shall unleavened bread be eaten.
"'On the fifteenth day of the seventh month you shall have a holy convocation; you shall do no servile work, and you shall keep a feast to Yahweh seven days:
They traveled from Rameses in the first month, on the fifteenth day of the first month; on the next day after the Passover the children of Israel went out with a high hand in the sight of all the Egyptians,
Jeroboam ordained a feast in the eighth month, on the fifteenth day of the month, like the feast that is in Judah, and he went up to the altar; so did he in Bethel, sacrificing to the calves that he had made: and he placed in Bethel the priests of the high places that he had made.
He went up to the altar which he had made in Bethel on the fifteenth day in the eighth month, even in the month which he had devised of his own heart: and he ordained a feast for the children of Israel, and went up to the altar, to burn incense.
In the fifteenth year of Amaziah the son of Joash king of Judah Jeroboam the son of Joash king of Israel began to reign in Samaria, [and reigned] forty-one years.
for the fifteenth to Jeremoth, his sons and his brothers, twelve:
So they gathered themselves together at Jerusalem in the third month, in the fifteenth year of the reign of Asa.
But the Jews who were in Shushan assembled together on the thirteenth and on the fourteenth days of the month; and on the fifteenth day of that month, they rested, and made it a day of feasting and gladness.
to enjoin them that they should keep the fourteenth and fifteenth days of the month Adar yearly,
It happened also in the twelfth year, in the fifteenth [day] of the month, that the word of Yahweh came to me, saying,
In the seventh [month], in the fifteenth day of the month, in the feast, shall he do the like the seven days; according to the sin offering, according to the burnt offering, and according to the meal offering, and according to the oil.
Now in the fifteenth year of the reign of Tiberius Caesar, Pontius Pilate being governor of Judea, and Herod being tetrarch of Galilee, and his brother Philip tetrarch of the region of Ituraea and Trachonitis, and Lysanias tetrarch of Abilene,