fifteenth

Lantern Festival falls on the fifteenth day of the first lunar month. This is the first full moon of the new year, symbolizing unity and perfection.

So, initially they came up with four lines and then eventually five and even six, and then they went back to five by the fifteenth century.

When oil paint replaced tempera in the fifteenth century, it helped painters to deal with difficult subjects like the human figure because, unlike tempera, oil can be blended and overpainted.

They succeeded in the experiment on the fifteenth trial.

It is unacceptable that here, in the country that invented the Internet, we fell to fifteenth in the world in broadband deployment.

She celebrated her fifteenth birthday.