'Weeks' in the Bible

Seventy weeks have been decreed concerning your people and your holy city: to restrain transgression, to put an end to sin, to make atonement for lawlessness, to establish everlasting righteousness, to conclude vision and prophecy, and to anoint the Most Holy Place.

So be informed and discern that seven weeks and 62 weeks will elapse from the issuance of the command to restore and rebuild Jerusalem until the Anointed Commander. The plaza and moat will be rebuilt, though in troubled times.

Then after the 62 weeks, the anointed one will be cut down (but not for himself). Then the people of the Coming Commander will destroy both the city and the Sanctuary. Its ending will come like a flood, and until the end there will be war, with desolations having been decreed.

"At that time I, Daniel, had been mourning for three straight weeks.

I ate no fancy foods neither meat nor wine entered my mouth. Furthermore, I didn't use any ointment until the end of the entire three weeks.