🔼The name Ziv in the Bible
The name Ziv occurs only twice in the Bible, and that in the same single context. In 1 Kings 6:1 we learn that 480 years after the Exodus, in the fourth year of Solomon's reign over Israel, he began building the temple of YHWH in Jerusalem in the month Ziv, that is the second month of the agricultural year. In 1 Kings 6:37 this is confirmed and in 6:38 we read that in the eleventh year of Solomon's reign, but in the month Bul, that is the eighth month, the building was completed.
The names Ziv and Bul were apparently Canaanite names, while in the Bible mostly the Hebrew names for months are used. Strangely enough, the Hebrew names for the second month (Iyyar, איר) and the eighth month (Marcheshvan, מרחשון, or Cheshvan, חשון) are not used in the Bible.
🔼Etymology of the name Ziv
It's formally unclear where the name Ziv comes from, but here at Abarim Publications we're pretty confident that it derives from the root זהה (zhh):
The name Ziv means Sprouting and belongs to the Blossom Month. The building of the temple obviously reflected the Sabbath cycle of seven years, as well as the agricultural year spanning the month of the blossoms (Ziv) to the month of the harvest (Bul).