Following the customs of the time, they celebrated the festival.

During rush hour, the trains are very crowded.

In order to find the least common denominator, you need to find the multiples of all denominators.

In Japanese mythology, the Tsuchi-no-kami is considered the god who rules the earth.

My class starts at eleven o'clock.

I eat lunch at twelve o'clock.

Greenwich Mean Time is the standard that determines the time of the world.

In her anger, she decided to perform the ushi no toki mairi.

He is interested in diachronic linguistics studies.

He is interested in synchronic linguistics.