In the New Testament, we read that we, God's people, are the temple of God- a spiritual temple:
"Know ye not that ye are the temple of God, and that the Spirit of God dwelleth in you?" 1 Corinth 3:16

"And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people." 2 Corinth 6:16

The Old Testament is full of shadows that point to the greater fulfillment. In Haggai, we learn of the instruction to rebuild the literal temple.
Likewise this story has a present time fulfillment- a spiritual fulfillment. We are called to build the temple: to share the gospel.
In the literal story in Haggai, we read in chapter 1:
14 So the Lord stirred up the spirit of Zerubbabel the son of Shealtiel, governor of Judah, and the spirit of Joshua the son of Jehozadak, the high priest, and the spirit of all the remnant of the people; and they came and worked on the house of the Lord of hosts, their God, 15 on the twenty-fourth day of the sixth month, in the second year of King Darius.

The mention of the day of the year like all scripture, is intentional. "One jot or one tittle" Every detail of the Law and the Prophets (Scripture) is significant and has or will be fulfilled.
Note that the 24th day of the 6th month is exactly 6 days before the Feast Day of Trumpets. That Day foreshadows the return of the Lord. Six 'days' then the Lord returns and we rest for the millenium.

May the spirit of the Lord stir up his remnant to work on the house of the Lord of hosts, our God! The six days are almost over.